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<!DOCTYPE html><html><head>
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<div class="crossnote markdown-preview ">
<h1 id="span-stylecolor-rgb217-70-239corso-pythonspan"><span style="color: rgb(0, 0, 0);">Corso Python</span> </h1>
<h2 id="span-idindice-styletext-decoration-underline-color-rgb134-239-172indicespan"><span id="indice" style="text-decoration: underline; color: rgb(0, 0, 0);">INDICE</span> </h2>
<ul style="display: flex; flex-wrap: wrap; list-style-type: decimal-leading-zero;">
<li style="padding-right: 35px ;"><a href="#variabili">Variabili</a></li>
<li style="padding-right: 35px ;"><a href="#tipi-di-dati">Tipi di Dati</a></li>
<li style="padding-right: 35px ;"><a href="#casting">Casting</a></li>
<li style="padding-right: 35px ;"><a href="#le-stringhe">Stringhe</a></li>
<li style="padding-right: 35px ;"><a href="#boolean">Booleani</a></li>
<li style="padding-right: 35px ;"><a href="#operazioni-aritmetiche">Operazioni Aritmetiche</a></li>
<li style="padding-right: 35px ;"><a href="#IF-statement">IF Statement</a></li>
<li style="padding-right: 35px ;"><a href="#Cicli-FOR">Cicli FOR</a></li>
<li style="padding-right: 35px ;"><a href="#collezione-di-dati">Collezione di Dati</a></li>
<li style="padding-right: 35px ;"><a href="#funzioni">Funzioni</a></li>
<li style="padding-right: 35px ;"><a href="#classi-e-oggetti">Classi e Oggetti</a></li>
<li style="padding-right: 35px ;"><a href="#ereditariet%C3%A0">Ereditarietà</a></li>
<li style="padding-right: 35px ;"><a href="#scope">Scope</a></li>
<li style="padding-right: 35px ;"><a href="#moduli">Moduli</a></li>
<li style="padding-right: 35px ;"><a href="#json">JSON</a></li>
<li style="padding-right: 35px ;"><a href="#pip">PIP</a></li>
<li style="padding-right: 35px ;"><a href="#try-except">Try/Except</a></li>
<li style="padding-right: 35px ;"><a href="#input-di-dati">Input di Dati</a></li>
<li style="padding-right: 35px ;"><a href="#file">Lavorare con i File</a></li>
</ul>
<h2 id="span-stylecolor-rgb34-211-238sintassispan"><span style="color: black;">SINTASSI</span> </h2>
<p>Qui vedremo la sintassi di Python facendo alcuni esempi. Ricordiamo che Python utilizza il terminale per poter lavorare. Vediamo qualche esempio di sintassi:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>messaggio <span class="token operator">=</span> <span class="token builtin">input</span><span class="token punctuation">(</span><span class="token string">"Inserisci qualcosa"</span><span class="token punctuation">)</span> <span class="token comment">#Il commento viene eseguito con "#"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>messaggio<span class="token punctuation">)</span>
</code></pre><p>Questo semplice codice nel terminale visualizza il messaggio, aspettando per un input. Quando l'input gli è stato dato, esso andrà a visualizzare il risultato di messaggio dal "print".</p>
<h4 id="span-style-color-rgb190-18-60-text-align-centerimportantespan"><span style=" color: rgb(190 18 60); text-align: center;">IMPORTANTE</span> </h4>
<p>Python utilizza il cursore "di scrittura" per gestire dove ti trovi all'interno del codice. In che senso? Vediamolo meglio:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code><span class="token keyword keyword-if">if</span> <span class="token number">10</span> <span class="token operator"><</span> <span class="token number">5</span><span class="token punctuation">:</span>
<span class="token operator">|</span><span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>messaggio<span class="token punctuation">)</span> <span class="token comment">#Mi trovo all'interno dell'IF perchè l'intestazione (|) </span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"ciao"</span><span class="token punctuation">)</span> <span class="token comment">#Non sono all'interno dell'IF.</span>
</code></pre><p>Se non viene rispettato, Python andrà in errore.</p>
<h2 id="span-idvariabili-stylecolor-rgb34-211-238variabilispan"><span id="variabili" style="color: black;">VARIABILI</span> </h2>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
</ul>
<p>Le variabili in Python sono molto differenti..</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code><span class="token comment">#Per definire una variabile deve avere sempre un assegnazione</span>
x <span class="token operator">=</span> <span class="token number">5</span>
y <span class="token operator">=</span> <span class="token number">6</span>
z <span class="token operator">=</span> <span class="token number">200</span>
x<span class="token punctuation">,</span> y<span class="token punctuation">,</span> z <span class="token operator">=</span> <span class="token number">32</span><span class="token punctuation">,</span> <span class="token number">100</span><span class="token punctuation">,</span> <span class="token number">987</span>
x <span class="token operator">=</span> y <span class="token operator">=</span> z <span class="token operator">=</span> <span class="token number">32</span>
citta <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">]</span>
x<span class="token punctuation">,</span> y<span class="token punctuation">,</span> z <span class="token operator">=</span> citta
x <span class="token comment"># ROMA</span>
y <span class="token comment"># MILANO</span>
z <span class="token comment"># NAPOLI</span>
<span class="token comment">#Ad esempio non possiamo dichiarare variabili senza un assegnazione di valore</span>
X <span class="token comment"># ❌</span>
Y <span class="token comment"># ❌</span>
Z <span class="token comment"># ❌</span>
</code></pre><h2 id="span-idtipi-di-dati-stylecolor-rgb34-211-238tipi-di-datispan"><span id="tipi-di-dati" style="color: black;">Tipi di Dati</span> </h2>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
</ul>
<p>Python ha molti tipi di dati, vediamo subito quali:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token number">5</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token builtin">type</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Per vedere che tipo di dato sia una variabile, in questo caso INT.( <class INT> )</span>
x <span class="token operator">=</span> <span class="token number">5.5</span> <span class="token comment"># <class float></span>
x <span class="token operator">=</span> <span class="token string">'ciao'</span> <span class="token comment"># <class str></span>
x <span class="token operator">=</span> <span class="token boolean">True</span> <span class="token comment"># <class bool> "false OR true" viene scritto sempre con Capital Case.</span>
</code></pre><p>In Python inoltre ad avere queste semplici variabili, abbiamo le collezione di dati, che al primo impatto potrebbero sembrare semplicemente degli Array:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'roma'</span><span class="token punctuation">,</span> <span class="token string">'milano'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">]</span> <span class="token comment"># <class list></span>
x <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token string">'roma'</span><span class="token punctuation">,</span> <span class="token string">'milano'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">)</span> <span class="token comment"># <class tuple></span>
x <span class="token operator">=</span> <span class="token builtin">range</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)</span> <span class="token comment"># <class range> invece di fare un array [0,1,2,3,4,5,6] utilizza il range.</span>
x <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"nome"</span><span class="token punctuation">:</span> <span class="token string">"Luca"</span><span class="token punctuation">,</span> <span class="token string">"eta"</span><span class="token punctuation">:</span> <span class="token number">25</span><span class="token punctuation">}</span> <span class="token comment"># <class dict> coppia chiave-valore</span>
x <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">'roma'</span><span class="token punctuation">,</span> <span class="token string">'milano'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">}</span> <span class="token comment"># <class set></span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token builtin">type</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">)</span>
</code></pre><h2 id="span-idcasting-stylecolor-rgb34-211-238castingspan"><span id="casting" style="color: black;">Casting</span> </h2>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
</ul>
<p>In Python non può esiste una concatenazione di tipo JavaScript di due variabili con tipi diversi:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token string">"5"</span>
y <span class="token operator">=</span> <span class="token number">5</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y<span class="token punctuation">)</span> ❌ <span class="token comment">#Unsupported operand type(s) for +: 'int' and 'str'.</span>
x <span class="token operator">=</span> <span class="token string">"5"</span>
y <span class="token operator">=</span> <span class="token builtin">str</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token comment">#Convertiamo il numero in stringa con str()</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y<span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo 55</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token number">5</span>
y <span class="token operator">=</span> <span class="token builtin">int</span><span class="token punctuation">(</span><span class="token string">"494579"</span><span class="token punctuation">)</span> <span class="token comment">#Convertiamo la string in intero con int()</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y<span class="token punctuation">)</span> ✅
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token builtin">float</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token builtin">type</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment"># <class float></span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># 5.0</span>
</code></pre><h2 id="span-idle-stringhe-stylecolor-rgb34-211-238le-stringhespan"><span id="le-stringhe" style="color: black;">Le stringhe</span> </h2>
<h3 id="indice">Indice </h3>
<ul>
<li>
<p><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></p>
</li>
<li>
<p><a href="#trattare-le-stringhe-come-array">Stringhe come ARRAY</a></p>
</li>
<li>
<p><a href="#prendere-parti-di-stringe">Prendere parti di stringhe</a></p>
</li>
<li>
<p><a href="#modificare-le-stringhe">Modificare le stringe</a></p>
</li>
<li>
<p><a href="#escape-dei-caratteri">Escape dei caratteri</a></p>
</li>
</ul>
<p>Su Python abbiamo tanto da dire sulle stringhe, vediamo subito:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token string">"ciao"</span> <span class="token comment">#Le doppie apici non permettono di scrivere su più linee </span>
<span class="token comment">#(Esempio)</span>
x <span class="token operator">=</span> "ciao
io sono fabiano" ❌
<span class="token comment">#Piuttosto si utilizzano in python le triple apici</span>
x <span class="token operator">=</span> <span class="token triple-quoted-string string">"""ciao
io posso scrivere adesso su più linee
si"""</span> ✅
y <span class="token operator">=</span> <span class="token string">'ciao'</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span>
</code></pre><h3 id="trattare-le-stringhe-come-array">Trattare le stringhe come array </h3>
<p>Le stringhe in Pyton vengono trattati come Array, in Python però gli ARRAY NON ESISTONO (tranne con librerie)<br>
Le stringhe hanno degli indici:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token string">"ciao"</span>
y <span class="token string">"ciao sono fabiano"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "c"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>y<span class="token punctuation">[</span><span class="token number">4</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment">#Visulizzeremo " " perchè lo spazio viene contato anche.</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token string">"ciao"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token builtin">len</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo 3, utilizziamo len per trovare la lunghezza della stringa. </span>
<span class="token comment">#Ricorda che si conta da 0</span>
<span class="token keyword keyword-for">for</span> carattere <span class="token keyword keyword-in">in</span> <span class="token string">"computer"</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>carattere<span class="token punctuation">)</span>
<span class="token comment">#C O M P U T E R </span>
</code></pre><h3 id="prendere-parti-di-stringe">Prendere parti di stringe </h3>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token string">"ciao sono fabiano"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">[</span><span class="token punctuation">:</span><span class="token number">3</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "cia"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">:</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "ao sono fabiano"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">:</span><span class="token number">7</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "ao so", da 2 a 7. "c-0/i-1/a-2/o-3/" "-4/s-5/o-6/n-7" IL 7 non è compreso</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">[</span><span class="token operator">-</span><span class="token number">4</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo i, da fabiano "o-0/n-1/a-2/i-3/b-4" al contrario</span>
</code></pre><h3 id="modificare-le-stringhe">Modificare le stringhe </h3>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token string">"ciao sono luca"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">.</span>upper<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "CIAO SONO LUCA"</span>
x <span class="token operator">=</span> <span class="token string">"ciao sono LUCA"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">.</span>lower<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "ciao sono luca"</span>
x <span class="token operator">=</span> <span class="token string">" ciao sono luca "</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">.</span>strip<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "ciao sono luca", strip toglie gli spazi all'inizio e alla fine</span>
x <span class="token operator">=</span> <span class="token string">"ciao sono luca"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">.</span>replace<span class="token punctuation">(</span><span class="token string">"o"</span><span class="token punctuation">,</span> <span class="token string">"w"</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "ciaw swnw luca"</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>CONCATENAZIONE <span class="token operator">&</span> FORMAT<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token string">"ciao sono "</span> <span class="token comment">#Non dimenticare dello spazio per la concatenazione</span>
y <span class="token operator">=</span> <span class="token string">"Luca"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y<span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "ciao sono luca"</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
prova <span class="token operator">=</span> <span class="token string">"Ciao sono Luca e sono nato il"</span> <span class="token operator">+</span> <span class="token number">15</span> <span class="token comment">#❌</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">)</span> <span class="token comment">#TypeError: Can only concatenate "str" (not "int") to str</span>
prova <span class="token operator">=</span> <span class="token string">"Ciao sono Luca e sono nato il {}"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">.</span><span class="token builtin">format</span><span class="token punctuation">(</span><span class="token number">15</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "Ciao sono Luca e sono nato il 15."</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> <span class="token keyword keyword-or">or</span> <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token number">24</span>
prova <span class="token operator">=</span> <span class="token string">"Ciao sono Luca e sono nato il {}"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">.</span><span class="token builtin">format</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "Ciao sono Luca e sono nato il 24."</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> <span class="token keyword keyword-or">or</span> <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
prova <span class="token operator">=</span> <span class="token string">"Ciao sono Luca e sono nato il {}, peso {} e peso {}"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">.</span><span class="token builtin">format</span><span class="token punctuation">(</span><span class="token number">15</span><span class="token punctuation">,</span><span class="token number">65</span><span class="token punctuation">,</span> <span class="token number">1.70</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "Ciao sono Luca e sono nato il 15, peso 65 e sono alto 1.70"</span>
<span class="token comment">#oppure possiamo decidere anche gli indici</span>
prova <span class="token operator">=</span> <span class="token string">"Ciao sono Luca e sono nato il {1}, peso {0} e peso {2}"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">.</span><span class="token builtin">format</span><span class="token punctuation">(</span><span class="token number">15</span><span class="token punctuation">,</span><span class="token number">65</span><span class="token punctuation">,</span> <span class="token number">1.70</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "Ciao sono Luca e sono nato il 65, peso 15 e sono alto 1.70"</span>
</code></pre><h3 id="escape-dei-caratteri">Escape dei caratteri </h3>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>prova <span class="token operator">=</span> <span class="token string">"Ciao sono Luca e sono "</span>figo<span class="token string">""</span> <span class="token comment">#L'apice che si utilizza per dire "figo" lo intende come fine della stringa</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">)</span> ❌
<span class="token comment">#PERCIO'</span>
prova <span class="token operator">=</span> <span class="token string">"Ciao sono Luca e sono \"figo\""</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "Ciao sono Luca e sono "figo" ✅</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> SINGOLI APICI <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
prova <span class="token operator">=</span> <span class="token string">'Ciao sono in cerca dell'</span>amore'
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">)</span> ❌
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
prova <span class="token operator">=</span> <span class="token string">'Ciao sono in ricerca dell\'amore'</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>prova<span class="token punctuation">)</span> <span class="token comment">#Visualizzeremo "Ciao sono in ricerca dell'amore" ✅</span>
</code></pre><h2 id="span-idboolean-stylecolor-rgb34-211-238booleanspan"><span id="boolean" style="color: black;">Boolean</span> </h2>
<p><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></p>
<p>Parleremo dei valori Booleani in Python:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token boolean">True</span>
y <span class="token operator">=</span> <span class="token boolean">False</span>
<span class="token comment">#I valori che torneranno sempre False</span>
<span class="token builtin">bool</span><span class="token punctuation">(</span><span class="token boolean">False</span><span class="token punctuation">)</span>
<span class="token builtin">bool</span><span class="token punctuation">(</span><span class="token boolean">None</span><span class="token punctuation">)</span>
<span class="token builtin">bool</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span>
<span class="token builtin">bool</span><span class="token punctuation">(</span><span class="token string">""</span><span class="token punctuation">)</span>
<span class="token builtin">bool</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token builtin">bool</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">)</span>
<span class="token builtin">bool</span><span class="token punctuation">(</span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token comment">#Esempio</span>
x <span class="token operator">=</span> <span class="token number">0</span>
<span class="token keyword keyword-if">if</span> pane<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Non serve andare al supermercato"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Uscire a comprare il pane"</span><span class="token punctuation">)</span>
<span class="token comment">#In questo caso andrà nell'else perchè x = 0 ed è False.</span>
</code></pre><h2 id="span-idoperazioni-aritmetiche-stylecolor-rgb34-211-238operazioni-aritmetiche-span"><span id="operazioni-aritmetiche" style="color: black;">Operazioni aritmetiche </span> </h2>
<p><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token number">5</span>
y <span class="token operator">=</span> <span class="token number">9</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y<span class="token punctuation">)</span> <span class="token comment">#14</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">-</span> y<span class="token punctuation">)</span> <span class="token comment">#-4</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">*</span> y<span class="token punctuation">)</span> <span class="token comment">#45</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">/</span> y<span class="token punctuation">)</span> <span class="token comment">#0.5555555</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">%</span> <span class="token number">5</span><span class="token punctuation">)</span> <span class="token comment">#5 il resto</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">**</span> y<span class="token punctuation">)</span> <span class="token comment">#3125 5^9</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">//</span> y<span class="token punctuation">)</span> <span class="token comment">#Fa la divisione ma con arrotondamento</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y <span class="token operator">*</span> <span class="token number">2</span><span class="token punctuation">)</span>
<span class="token comment">#oppure</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y<span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token number">5</span>
x <span class="token operator">=</span> x <span class="token operator">+</span> <span class="token number">2</span> <span class="token comment"># x = 5 perciò x = 5+2</span>
y <span class="token operator">=</span> <span class="token number">7</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">#7</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x <span class="token operator">+</span> y<span class="token punctuation">)</span> <span class="token comment">#14</span>
x <span class="token operator">=</span> <span class="token number">15</span>
x <span class="token operator">+=</span> <span class="token number">2</span> <span class="token comment">#Operatore di addizione e uguaglianza (shortcut)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">#17</span>
<span class="token comment">#Ne esistono altri</span>
<span class="token operator">-=</span>
<span class="token operator">*=</span>
<span class="token operator">/=</span>
</code></pre><h3 id="metodi-degli-operatori">Metodi degli operatori </h3>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token builtin">min</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">,</span><span class="token number">10</span><span class="token punctuation">,</span><span class="token number">25</span><span class="token punctuation">)</span> <span class="token operator">//</span> x <span class="token operator">=</span> <span class="token builtin">max</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">,</span><span class="token number">10</span><span class="token punctuation">,</span><span class="token number">25</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">#5 // 25</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token builtin">abs</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">5</span><span class="token punctuation">)</span> <span class="token operator">//</span> x <span class="token operator">=</span> <span class="token builtin">abs</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">#5 VALORE ASSOLUTO</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token builtin">pow</span><span class="token punctuation">(</span><span class="token number">4</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">#64 4*4*4</span>
</code></pre><h2 id="span-idif-statement-stylecolor-rgb34-211-238if-statementspan"><span id="IF-statement" style="color: black;">IF STATEMENT</span> </h2>
<p><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></p>
<p>L'operatore IF in Python è uguale come per tutti gli altri linguaggi, semplicemente una breve spiegazione della sua sintassi che cambia:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code><span class="token keyword keyword-if">if</span> <span class="token number">10</span> <span class="token operator">></span> <span class="token number">5</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Condizione rispettata"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-elif">elif</span> <span class="token number">10</span> <span class="token operator">==</span> <span class="token number">10</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"If else viene scritto con \"elif"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Normale else"</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> NEGAZIONE<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token number">11</span>
y <span class="token operator">=</span> <span class="token number">5</span>
<span class="token keyword keyword-if">if</span> <span class="token keyword keyword-not">not</span><span class="token punctuation">(</span>x <span class="token operator"><</span> <span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token comment"># not(False)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Condizione verificata"</span><span class="token punctuation">)</span> <span class="token comment">#NOI CI TROVIAMO QUA perchè la negazione di false è TRUE... not()</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Condizione non verificata"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-if">if</span> <span class="token keyword keyword-not">not</span><span class="token punctuation">(</span>x <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token comment"># not(True)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Condizione verificata"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Condizione non verificata"</span><span class="token punctuation">)</span> <span class="token comment">#NOI CI TROVIAMO QUA perchè la negazione di true è FALSE...not() </span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> AND OR <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-if">if</span> x <span class="token operator">></span> <span class="token number">10</span> <span class="token keyword keyword-and">and</span> <span class="token number">10</span> <span class="token operator">></span> y<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Condizone verificata"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-elif">elif</span> x <span class="token operator">></span> <span class="token number">10</span> <span class="token keyword keyword-or">or</span> <span class="token number">10</span> <span class="token operator">></span> y<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Or condizione"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Condizione non verificata"</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>INLINE IF<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"è maggiore di 10"</span><span class="token punctuation">)</span> <span class="token keyword keyword-if">if</span> x <span class="token operator">></span> <span class="token number">10</span> <span class="token keyword keyword-else">else</span> <span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"è minore di 10"</span><span class="token punctuation">)</span>
</code></pre><h2 id="span-idcicli-for-stylecolor-rgb34-211-238cicli-for-span"><span id="Cicli-FOR" style="color: black;">Cicli FOR </span> </h2>
<p><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></p>
<p>Vediamo i CICLI FOR in Python:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>lista_citta <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'roma'</span><span class="token punctuation">,</span> <span class="token string">'milano'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">]</span>
<span class="token keyword keyword-for">for</span> citta <span class="token keyword keyword-in">in</span> lista_citta<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>citta<span class="token punctuation">)</span> <span class="token comment">#Roma, Milano, Napoli.</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
stringa <span class="token operator">=</span> <span class="token string">"anguria"</span>
<span class="token keyword keyword-for">for</span> lettera <span class="token keyword keyword-in">in</span> stringa<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>lettera<span class="token punctuation">)</span> <span class="token comment">#A N G U R I A</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
numeri_range_sei <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">,</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token number">4</span><span class="token punctuation">,</span><span class="token number">5</span><span class="token punctuation">,</span><span class="token number">6</span><span class="token punctuation">]</span>
<span class="token keyword keyword-for">for</span> numero <span class="token keyword keyword-in">in</span> numeri_range_sei<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>numero<span class="token punctuation">)</span> <span class="token comment">#0,1,2,3,4,5,6 ❌</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> MODO CORRETTO ✅
<span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> <span class="token builtin">range</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">#0,1,2,3,4,5</span>
</code></pre><p>Inoltre possiamo anche utilizzare:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code><span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> <span class="token builtin">range</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-if">if</span> x <span class="token operator">==</span> <span class="token number">3</span>
<span class="token keyword keyword-break">break</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># 0, 1, 2</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"ho finito"</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> <span class="token builtin">range</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-if">if</span> x <span class="token operator">==</span> <span class="token number">3</span>
<span class="token keyword keyword-continue">continue</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># 0, 1, 2, 4, 5, ho finito</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"ho finito"</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> <span class="token builtin">range</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-for">for</span> colonna <span class="token keyword keyword-in">in</span> <span class="token builtin">range</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"("</span> <span class="token operator">+</span> <span class="token builtin">str</span><span class="token punctuation">(</span>riga<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">":"</span> <span class="token operator">+</span> <span class="token builtin">str</span><span class="token punctuation">(</span>colonna<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">")"</span><span class="token punctuation">)</span> <span class="token comment">#(0:0), (0:1), (1:0), (1:1), (2:0)...</span>
<span class="token comment">#fino a (5:0), (5:1), ho finito</span>
<span class="token keyword keyword-else">else</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"ho finito"</span><span class="token punctuation">)</span>
</code></pre><h2 id="span-idcollezione-di-dati-stylecolor-rgb34-211-238collezione-di-datispan"><span id="collezione-di-dati" style="color: black">Collezione di Dati</span> </h2>
<h5>La collezione di Dati è un argomento molto importante di Python, dove vediamo come creare un "contenitore" di variabili</h5>
<h3 id="indice-1">Indice </h3>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
<li><a href="#liste">Liste</a></li>
<li><a href="#tuple">Tuple</a></li>
<li><a href="#set">Set</a></li>
<li><a href="#dictionary">Dictionary</a></li>
</ul>
<p>Una collezione di dati sono tutti quei valori che raggruppano un numero di dati elevato e abbiamo visto che esistono diversi tipi: LIST, TUPLE, SET, DICTIONARY</p>
<ul>
<li>Le <span style="font-weight:bold; color: red;">liste</span> sono collezioni ordinate e modificabili. Permettono duplicati.</li>
<li>Le <span style="font-weight:bold; color: red;">tuple</span> sono collezioni ordinate ma immutabili. Permettono duplicati.</li>
<li>I <span style="font-weight:bold; color: red;">set</span> sono collezioni non ordinate e perciò non indicizzate. Non permettono duplicati.</li>
<li>I <span style="font-weight:bold; color: red;">dictionary</span> sono collezioni ordinate e modificabili. Non permetono duplicati.</li>
</ul>
<h3 id="span-idliste-stylecolor-rgb34-211-238liste-listspan"><span id="liste" style="color: black">Liste/ List</span> </h3>
<h3 id="indice-2">Indice </h3>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
<li><a href="#collezione-di-dati" style="color: green; font-weight: bold; ">Torna all'indice di Collezione Dati</a></li>
<li><a href="#list-comprehension">List Comprehension</a></li>
</ul>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'milano'</span><span class="token punctuation">,</span><span class="token string">'roma'</span><span class="token punctuation">,</span><span class="token string">'napoli'</span><span class="token punctuation">]</span>
y <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'ciao'</span><span class="token punctuation">,</span> <span class="token number">909</span><span class="token punctuation">,</span> <span class="token boolean">False</span><span class="token punctuation">]</span>
z <span class="token operator">=</span> <span class="token builtin">list</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> Modifica <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token string">"brescia"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Brescia, Roma, Napoli</span>
x<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">:</span><span class="token number">3</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'brescia'</span><span class="token punctuation">,</span> <span class="token string">'udine'</span><span class="token punctuation">]</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Milano, Brescia, Udine</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> AGGIUNTA <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">]</span>
x<span class="token punctuation">.</span>append<span class="token punctuation">(</span><span class="token string">"brescia"</span><span class="token punctuation">)</span> <span class="token comment">#Appende infondo alla lista il valore Brescia</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Milano, Roma, Napoli, Venezia, Brescia</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">]</span>
x<span class="token punctuation">.</span>append<span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token string">"brescia"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Milano, Brescia, Roma, Napoli, Venezia</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> ESTENSIONE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">]</span>
y <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'brescia'</span><span class="token punctuation">,</span> <span class="token string">'udine'</span><span class="token punctuation">]</span>
x<span class="token punctuation">.</span>extend<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Milano, Roma, Napoli, Venezia, Brescia, Udine</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> RIMUOVERE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">]</span>
x<span class="token punctuation">.</span>remove<span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Roma, Napoli, Venezia</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> POP <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">]</span>
x<span class="token punctuation">.</span>pop<span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span>
x<span class="token punctuation">.</span>pop<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Roma, Napoli, Venezia</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Milano, Roma, Napoli</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> DEL <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">]</span>
<span class="token keyword keyword-del">del</span> x<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Roma Napoli Venezia</span>
<span class="token keyword keyword-del">del</span> x
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">#Name "x" is not defined - Ho cancellato tutta la lista</span>
x<span class="token punctuation">.</span>clear<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># []</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> ESEMPIO <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'udine'</span><span class="token punctuation">,</span> <span class="token string">'roma'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">,</span> <span class="token string">'venezia'</span><span class="token punctuation">]</span>
<span class="token keyword keyword-for">for</span> i <span class="token keyword keyword-in">in</span> <span class="token builtin">range</span><span class="token punctuation">(</span><span class="token builtin">len</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment"># Udine, Roma, Napoli, Venezia</span>
</code></pre><h3 id="list-comprehension">List Comprehension </h3>
<p>Scrivere esperessioni inline:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>lista_citta <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'udine'</span><span class="token punctuation">,</span> <span class="token string">'roma'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">,</span> <span class="token string">'venezia'</span><span class="token punctuation">]</span>
<span class="token comment">#[espressione for item in lista if condizione == True]</span>
<span class="token punctuation">[</span><span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>citta<span class="token punctuation">)</span> <span class="token keyword keyword-for">for</span> citta <span class="token keyword keyword-in">in</span> lista_citta <span class="token keyword keyword-if">if</span> citta <span class="token operator">!=</span> <span class="token string">"roma"</span><span class="token punctuation">]</span> <span class="token comment">#Stamperà Udine, Napoli, Venezia.</span>
</code></pre><h3 id="modificare-lordine">Modificare l'ordine </h3>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>lista_citta <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'udine'</span><span class="token punctuation">,</span> <span class="token string">'roma'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">,</span> <span class="token string">'venezia'</span><span class="token punctuation">]</span>
lista_citta<span class="token punctuation">.</span>sort<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># (Ordine alfabetico) - (Ordine Numerico)</span>
lista_citta<span class="token punctuation">.</span>sort<span class="token punctuation">(</span>reverse<span class="token operator">=</span><span class="token boolean">True</span><span class="token punctuation">)</span> <span class="token comment"># Ordine contrario Venezia, Udine, Roma, Napoli</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>lista_citta<span class="token punctuation">)</span> <span class="token comment"># Napoli, Roma, Udine, Venezia (Ordine alfabetico)</span>
</code></pre><h3 id="copiare-una-lista">Copiare una lista </h3>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'udine'</span><span class="token punctuation">,</span> <span class="token string">'bari'</span><span class="token punctuation">,</span> <span class="token string">'napoli'</span><span class="token punctuation">,</span> <span class="token string">'ancona'</span><span class="token punctuation">]</span>
y <span class="token operator">=</span> x<span class="token punctuation">.</span>copy<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">//</span> <span class="token builtin">list</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span>
y<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token string">"new york"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Udine, Bari, Napoli, Ancona</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>y<span class="token punctuation">)</span> <span class="token comment"># New York, Bari, Napoli, Ancona</span>
</code></pre><h3 id="span-idtuple-stylecolor-rgb34-211-238tuplespan"><span id="tuple" style="color: black">Tuple</span> </h3>
<h3 id="indice-3">Indice </h3>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
<li><a href="#collezione-di-dati" style="color: green; font-weight: bold; ">Torna all'indice di Collezione Dati</a></li>
</ul>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">)</span>
y <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token string">"milan"</span><span class="token punctuation">,</span> <span class="token boolean">True</span><span class="token punctuation">,</span> <span class="token number">45</span><span class="token punctuation">)</span>
x <span class="token operator">=</span> <span class="token builtin">tuple</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>SPACCHETTAMENTO<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
citta <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">)</span>
<span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">,</span> z<span class="token punctuation">)</span> <span class="token operator">=</span> citta
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Milano</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>y<span class="token punctuation">)</span> <span class="token comment"># Roma</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>z<span class="token punctuation">)</span> <span class="token comment"># Napoli</span>
<span class="token comment"># OPPURE</span>
citta <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">)</span>
<span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">,</span> <span class="token operator">*</span>z<span class="token punctuation">)</span> <span class="token operator">=</span> citta
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Milano</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>y<span class="token punctuation">)</span> <span class="token comment"># Roma</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>z<span class="token punctuation">)</span> <span class="token comment"># Diventa una lista ["napoli", "venezia"]</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> Count e Index <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
lista_citta <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">,</span> <span class="token string">"venezia"</span><span class="token punctuation">,</span> <span class="token string">"udine"</span><span class="token punctuation">,</span> <span class="token string">"milano"</span><span class="token punctuation">)</span>
x <span class="token operator">=</span> lista_citta<span class="token punctuation">.</span>count<span class="token punctuation">(</span><span class="token string">"udine"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># 1</span>
x <span class="token operator">=</span> lista_citta<span class="token punctuation">.</span>count<span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># 2</span>
x <span class="token operator">=</span> lista_citta<span class="token punctuation">.</span>index<span class="token punctuation">(</span><span class="token string">"udine"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># 4 Conta a che index è il valore udine</span>
x <span class="token operator">=</span> lista_citta<span class="token punctuation">.</span>index<span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># 0 Conta a che index è la prima corrispondenza con Milano</span>
</code></pre><h3 id="span-idset-stylecolor-rgb34-211-238setspan"><span id="set" style="color: black">Set</span> </h3>
<h3 id="indice-4">Indice </h3>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
<li><a href="#collezione-di-dati" style="color: green; font-weight: bold; ">Torna all'indice di Collezione Dati</a></li>
</ul>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>x <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">}</span>
y <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token number">34</span><span class="token punctuation">,</span> <span class="token boolean">True</span><span class="token punctuation">}</span>
z <span class="token operator">=</span> <span class="token builtin">set</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">)</span> ❌
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> ✅ <span class="token comment"># Dato che Set è una collezione di dati non ordinata, </span>
<span class="token comment"># per ogni print, l'ordine dell'oggetto sarà diverso</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-for">for</span> citta <span class="token keyword keyword-in">in</span> x<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>citta<span class="token punctuation">)</span> <span class="token comment"># Allo stesso modo verrà stampato in maniera casuale</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"milano"</span> <span class="token keyword keyword-in">in</span> x<span class="token punctuation">)</span> <span class="token comment"># True</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> AGGIUNGERE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x<span class="token punctuation">.</span>add<span class="token punctuation">(</span><span class="token string">"venezia"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># In modo casuale: "milano", "roma", "napoli", "venezia"</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> UPDATE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">}</span>
y <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"venezia"</span><span class="token punctuation">,</span> <span class="token string">"udine"</span><span class="token punctuation">}</span>
x<span class="token punctuation">.</span>update<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># "Venezia, Roma, Udine, Milano, Napoli"</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> RIMUOVERE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token comment"># remove(), discard(), pop(), clear(), del</span>
x<span class="token punctuation">.</span>remove<span class="token punctuation">(</span><span class="token string">"Milano"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># "Venezia, Roma, Udine, Napoli"</span>
x<span class="token punctuation">.</span>discard<span class="token punctuation">(</span><span class="token string">"Roma"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># "Venezia, Milano, Udine, Napoli"</span>
LA DIFFERENZA TRA DISCARD E REMOVE É SEMPLICEMENTE CHE SE DOVESSI TOGLIERE UN ELEMENTO
NON ESISTENTE<span class="token punctuation">,</span> REMOVE VA IN ERROR MENTRE DISCARD NO<span class="token punctuation">.</span>
x <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"Udine"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">}</span>
x<span class="token punctuation">.</span>remove<span class="token punctuation">(</span><span class="token string">"Milano"</span><span class="token punctuation">)</span> <span class="token comment"># ERROR❌</span>
x<span class="token punctuation">.</span>discard<span class="token punctuation">(</span><span class="token string">"Milano"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># "Udine, Roma, Napoli" ✅</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x<span class="token punctuation">.</span>pop<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment">#Eliminerà degli elementi casuali.</span>
x<span class="token punctuation">.</span>clear<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># set()</span>
<span class="token keyword keyword-del">del</span> x <span class="token comment">#Eliminato l'elemento X</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> UNIRE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">}</span>
y <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"venezia"</span><span class="token punctuation">,</span> <span class="token string">"udine"</span><span class="token punctuation">}</span>
z <span class="token operator">=</span> x<span class="token punctuation">.</span>union<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
<span class="token comment">#oppure</span>
z <span class="token operator">=</span> x<span class="token punctuation">.</span>update<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
<span class="token comment">#Entrambi però non aggiungono i duplicati (roma, roma)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>z<span class="token punctuation">)</span> <span class="token comment"># Milano, Roma, Napoli, Venezia, Udine</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
x <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"milano"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">,</span> <span class="token string">"napoli"</span><span class="token punctuation">}</span>
y <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token string">"venezia"</span><span class="token punctuation">,</span> <span class="token string">"udine"</span><span class="token punctuation">,</span> <span class="token string">"roma"</span><span class="token punctuation">}</span> <span class="token comment"># Ho due duplicati, OVVERO ROMA</span>
x<span class="token punctuation">.</span>intersection_update<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
<span class="token comment"># oppure</span>
z <span class="token operator">=</span> x<span class="token punctuation">.</span>intersection<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># { roma }</span>
z <span class="token operator">=</span> x<span class="token punctuation">.</span>symmetric_difference_update<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
z <span class="token operator">=</span> x<span class="token punctuation">.</span>symmetric_difference<span class="token punctuation">(</span>y<span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>z<span class="token punctuation">)</span> <span class="token comment"># Milano, Napoli, Venezia, Udine (manda a schermo solo chi non ha duplicati)</span>
</code></pre><h3 id="span-iddictionary-stylecolor-rgb34-211-238dictionaryspan"><span id="dictionary" style="color: black">Dictionary</span> </h3>
<h3 id="indice-5">Indice </h3>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
<li><a href="#collezione-di-dati" style="color: green; font-weight: bold; ">Torna all'indice di Collezione Dati</a></li>
</ul>
<h4>I dict sono l'equivalente degli oggetti:</h4>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>persona <span class="token operator">=</span> <span class="token punctuation">{</span>
<span class="token string">"nome"</span><span class="token punctuation">:</span> <span class="token string">"luca"</span><span class="token punctuation">,</span>
<span class="token string">"cognome"</span><span class="token punctuation">:</span> <span class="token string">"rossi"</span><span class="token punctuation">,</span>
<span class="token string">"eta"</span><span class="token punctuation">:</span> <span class="token number">12</span>
<span class="token punctuation">}</span>
</code></pre><p>I dict non accettano duplicati, perciò se all'interno di questo oggetto io ho una chiave che è la stessa, python va in ERROR:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>persona <span class="token operator">=</span> <span class="token punctuation">{</span>
<span class="token string">"nome"</span><span class="token punctuation">:</span> <span class="token string">"luca"</span><span class="token punctuation">,</span>
<span class="token string">"cognome"</span><span class="token punctuation">:</span> <span class="token string">"rossi"</span><span class="token punctuation">,</span>
<span class="token string">"eta"</span><span class="token punctuation">:</span> <span class="token number">12</span><span class="token punctuation">,</span>
<span class="token string">"eta"</span><span class="token punctuation">:</span> <span class="token number">12</span>
<span class="token punctuation">}</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">)</span>❌
</code></pre><p>Come accediamo agli elementi al suo interno? Vediamolo:</p>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>persona <span class="token operator">=</span> <span class="token punctuation">{</span>
<span class="token string">"nome"</span><span class="token punctuation">:</span> <span class="token string">"luca"</span><span class="token punctuation">,</span>
<span class="token string">"cognome"</span><span class="token punctuation">:</span> <span class="token string">"rossi"</span><span class="token punctuation">,</span>
<span class="token string">"eta"</span><span class="token punctuation">:</span> <span class="token number">12</span>
<span class="token punctuation">}</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">(</span><span class="token string">"cognome"</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment"># Rossi</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">.</span>get<span class="token punctuation">(</span><span class="token string">"nome"</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment"># Luca</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">.</span>keys<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment"># nome, cognome, eta</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">.</span>values<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment"># Luca, Rossi, 12</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">.</span>items<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token comment">#Lista TUPLE: ('nome', 'Luca'), ('cognome', 'Rossi'), ('eta', 12)</span>
PER VEDERE SE UNA CHIAVE ESISTE
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"nome"</span> <span class="token keyword keyword-in">in</span> persona<span class="token punctuation">)</span> <span class="token comment"># True</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> MODIFICARE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
persona<span class="token punctuation">[</span><span class="token string">"nome"</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token string">"Marco"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">)</span> <span class="token comment"># Marco</span>
persona<span class="token punctuation">.</span>update<span class="token punctuation">(</span><span class="token punctuation">{</span><span class="token string">"nome"</span><span class="token punctuation">:</span> <span class="token string">"Marco"</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">)</span> <span class="token comment"># Marco</span>
persona<span class="token punctuation">[</span><span class="token string">"colore"</span><span class="token punctuation">]</span> <span class="token operator">=</span> <span class="token string">"Blu"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">)</span> <span class="token comment"># Luca, Rossi, 12, Blu</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> RIMUOVERE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token comment"># pop(key), popitem(), clear(), del</span>
persona<span class="token punctuation">.</span>pop<span class="token punctuation">(</span><span class="token string">"nome"</span><span class="token punctuation">)</span> <span class="token comment"># Rossi, 12</span>
persona<span class="token punctuation">.</span>popItem<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># Luca, Rossi (rimuove l'ultimo item)</span>
persona<span class="token punctuation">.</span>clear<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># {}</span>
<span class="token keyword keyword-del">del</span> persona<span class="token punctuation">[</span><span class="token string">"nome"</span><span class="token punctuation">]</span> <span class="token comment"># Rossi, 12</span>
<span class="token keyword keyword-del">del</span> persona <span class="token comment"># Eliminato</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> CICLARE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> persona<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># nome, cognome, eta</span>
<span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> persona<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">[</span>x<span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment"># Luca, Rossi, 12</span>
<span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> persona<span class="token punctuation">.</span>values<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Luca, Rossi, 12</span>
<span class="token keyword keyword-for">for</span> x <span class="token keyword keyword-in">in</span> persona<span class="token punctuation">.</span>keys<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># nome, cognome, eta</span>
<span class="token keyword keyword-for">for</span> x<span class="token punctuation">,</span> y <span class="token keyword keyword-in">in</span> persona<span class="token punctuation">.</span>items<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">)</span> <span class="token comment"># nome Luca, cognome Rossi, eta 12</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> COPIARE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token comment"># copy(), dict()</span>
x <span class="token operator">=</span> persona<span class="token punctuation">.</span>copy<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># Copia di persona</span>
x <span class="token operator">=</span> <span class="token builtin">dict</span><span class="token punctuation">(</span>persona<span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> DICT ANNIDATI <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
persona <span class="token operator">=</span> <span class="token punctuation">{</span>
<span class="token string">"nome"</span><span class="token punctuation">:</span> <span class="token string">"luca"</span><span class="token punctuation">,</span>
<span class="token string">"cognome"</span><span class="token punctuation">:</span> <span class="token string">"rossi"</span><span class="token punctuation">,</span>
<span class="token string">"eta"</span><span class="token punctuation">:</span> <span class="token number">12</span><span class="token punctuation">,</span>
<span class="token string">"indirizzo"</span> <span class="token punctuation">:</span> <span class="token punctuation">{</span>
<span class="token string">"citta"</span><span class="token punctuation">:</span> <span class="token string">"milano"</span><span class="token punctuation">,</span>
<span class="token string">"cap"</span><span class="token punctuation">:</span> <span class="token string">"00000"</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">)</span> <span class="token comment"># Tutto l'oggetto</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona<span class="token punctuation">[</span><span class="token string">"indirizzo"</span><span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token string">"citta"</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token comment"># Milano </span>
</code></pre><h2 id="span-idfunzioni-stylecolor-rgb34-211-238funzionispan"><span id="funzioni" style="color: black">FUNZIONI</span> </h2>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
</ul>
<h4>In questo paragrafo vedremo le Funzioni in Python, come vengono definite e come funzionano:</h4>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code>Per definire una funzione dobbiamo fare così<span class="token punctuation">:</span>
<span class="token keyword keyword-def">def</span> <span class="token function">fai_la_pasta</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti l'acqua"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Fai bollire"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti la pasta"</span><span class="token punctuation">)</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> PARAMETRI FUNZIONE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-def">def</span> <span class="token function">fai_la_pasta</span><span class="token punctuation">(</span>tipo_pasta<span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token comment">#Parametro</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti l'acqua"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Fai bollire"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti"</span> <span class="token operator">+</span> tipo_pasta<span class="token punctuation">)</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token string">"Fusilli"</span><span class="token punctuation">)</span> <span class="token comment">#Argomento</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token string">"Spaghetti"</span><span class="token punctuation">)</span> <span class="token comment">#Argomento</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> oppure <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-def">def</span> <span class="token function">fai_la_pasta</span><span class="token punctuation">(</span>tipo_pasta<span class="token punctuation">,</span> metti_sugo<span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti l'acqua"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Fai bollire"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti"</span> <span class="token operator">+</span> tipo_pasta<span class="token punctuation">)</span>
<span class="token keyword keyword-if">if</span> metti_sugo<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Prepara sugo"</span><span class="token punctuation">)</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token string">"Fusilli"</span><span class="token punctuation">,</span> <span class="token boolean">False</span><span class="token punctuation">)</span> <span class="token comment"># Stampera i PRINT fuori L'IF </span>
<span class="token comment"># (Mettere l'acqua, Fai Bollire, Metti Fusilli)</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token string">"Fusilli"</span><span class="token punctuation">,</span> <span class="token boolean">True</span><span class="token punctuation">)</span> <span class="token comment"># Stampa anche "prepara sugo"</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> ARBITRARY ARGUMENTS<span class="token punctuation">,</span> KEYWORD ARG<span class="token punctuation">,</span> ARBITRARY KEYWORD ARG<span class="token punctuation">.</span> <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
Facciamo finta di non sapere quanti parametri andremo a mettere nella funzione
<span class="token keyword keyword-def">def</span> <span class="token function">fai_la_pasta</span><span class="token punctuation">(</span><span class="token operator">*</span>opzioni<span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token comment"># * significa "Hey Python, io ci sto mettendo della roba qua, </span>
<span class="token comment">#ma non so quanta roba c'è"</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti l'acqua"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Fai bollire"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti"</span> <span class="token operator">+</span> opzioni<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">)</span>
<span class="token keyword keyword-if">if</span> opzioni<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"prepara sugo"</span><span class="token punctuation">)</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token string">"Fusilli"</span><span class="token punctuation">)</span> <span class="token comment"># Normale funzionamento</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token string">"Fusilli"</span><span class="token punctuation">,</span> <span class="token boolean">True</span><span class="token punctuation">)</span> <span class="token comment"># Prepara sugo</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> keyword args
<span class="token keyword keyword-def">def</span> <span class="token function">fai_la_pasta</span><span class="token punctuation">(</span>tipo_pasta<span class="token punctuation">,</span> sugo<span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti l'acqua"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Fai bollire"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti"</span> <span class="token operator">+</span> tipo_pasta<span class="token punctuation">)</span>
<span class="token keyword keyword-if">if</span> sugo<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Prepara sugo"</span><span class="token punctuation">)</span>
fai_la_pasta<span class="token punctuation">(</span>sugo<span class="token operator">=</span><span class="token boolean">True</span><span class="token punctuation">,</span> tipo_pasta<span class="token operator">=</span><span class="token string">"fusilli"</span><span class="token punctuation">)</span> <span class="token comment"># Metti l'acqua, Bollire, Metti Fusilli, Prepara sugo</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> ARBITRARY KEYWORD ARG<span class="token punctuation">.</span>
Sono un insieme dei due<span class="token punctuation">,</span> ma non è necessario vederli <span class="token punctuation">(</span>Extra<span class="token punctuation">)</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> PARAMETRI DI DEFAULT <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-def">def</span> <span class="token function">fai_la_pasta</span><span class="token punctuation">(</span>tipo_pasta <span class="token operator">=</span> <span class="token string">"Spaghetti"</span><span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token comment">#Parametro default</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti l'acqua"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Fai bollire"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti"</span> <span class="token operator">+</span> tipo_pasta<span class="token punctuation">)</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># Spaghetti</span>
fai_la_pasta<span class="token punctuation">(</span><span class="token string">"Fusilli"</span><span class="token punctuation">)</span> <span class="token comment"># Fusilli</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> RETURN DI VALORI <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-def">def</span> <span class="token function">fai_la_pasta</span><span class="token punctuation">(</span>tipo_pasta <span class="token operator">=</span> <span class="token string">"Spaghetti"</span><span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti l'acqua"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Fai bollire"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti"</span> <span class="token operator">+</span> tipo_pasta<span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Metti Tavola"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-return">return</span> <span class="token boolean">True</span>
is_pasta_pronta <span class="token operator">=</span> fai_la_pasta<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># True</span>
<span class="token keyword keyword-if">if</span> is_pasta_pronta<span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"venite a tavolaaaa"</span><span class="token punctuation">)</span> <span class="token comment"># Visualizzeremo Venite a tavolaaaa</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> OPPURE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-def">def</span> <span class="token function">fai_somma</span><span class="token punctuation">(</span>num1<span class="token punctuation">,</span> num2<span class="token punctuation">)</span><span class="token punctuation">:</span>
somma <span class="token operator">=</span> num1 <span class="token operator">+</span> num2
<span class="token keyword keyword-return">return</span> somma
x <span class="token operator">=</span> fai_somma<span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment"># Visualizzeremo 5</span>
</code></pre><h2 id="span-idclassi-e-oggetti-stylecolor-rgb34-211-238classi-e-oggettispan"><span id="classi-e-oggetti" style="color: black">Classi e Oggetti</span> </h2>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
</ul>
<h4>In questo paragrafo vedremo le Classi e gli Oggetti in Python, come vengono definite e come funzionano:</h4>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code><span class="token keyword keyword-class">class</span> <span class="token class-name">Persona</span><span class="token punctuation">:</span>
nome <span class="token operator">=</span> <span class="token string">"Luca"</span>
cognome <span class="token operator">=</span> <span class="token string">"Rossi"</span>
persona1 <span class="token operator">=</span> Persona<span class="token punctuation">(</span><span class="token punctuation">)</span>
persona2 <span class="token operator">=</span> Persona<span class="token punctuation">(</span><span class="token punctuation">)</span>
In python le classi sono oggetti<span class="token punctuation">,</span> e persona1 è un istanza dell'oggetto Persona<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona1<span class="token punctuation">.</span>nome<span class="token punctuation">)</span> <span class="token comment"># Luca</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> COSTRUTTORE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
Self è un riferimento che l<span class="token string">'istanza dell'</span>oggetto fa a sè stesso<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
In che senso? Per Python capire che la persona di cui si sta parlando<span class="token punctuation">,</span>
sia la persona1 e non una persona generica a caso<span class="token punctuation">,</span>
bisogna che si specifichi che <span class="token string">"self"</span> corrisponda a quell<span class="token string">'istanza dell'</span>oggetto
che deriva da Persona<span class="token punctuation">.</span> Se così non fosse<span class="token punctuation">,</span> sarebbe la stessa come chiedere a persona1<span class="token punctuation">(</span>Luca Rossi<span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token string">"Ciao come ti chiami?"</span> <span class="token string">"Giggio"</span> quando tu non sei Giggio<span class="token punctuation">,</span> ma Luca<span class="token punctuation">.</span>
<span class="token keyword keyword-class">class</span> <span class="token class-name">Persona</span><span class="token punctuation">:</span>
<span class="token keyword keyword-def">def</span> <span class="token function">__init__</span><span class="token punctuation">(</span>self<span class="token punctuation">,</span> nome<span class="token punctuation">,</span> cognome<span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token comment">#Self è il riferimento a sè stesso. l'ISTANZA perciò, si </span>
<span class="token comment">#riferisce a sè stesso (persona1 o persona2).</span>
self<span class="token punctuation">.</span>nome <span class="token operator">=</span> nome
self<span class="token punctuation">.</span>cognome <span class="token operator">=</span> cognome
persona1 <span class="token operator">=</span> Persona<span class="token punctuation">(</span><span class="token string">"Luca"</span><span class="token punctuation">,</span> <span class="token string">"Rossi"</span><span class="token punctuation">)</span>
persona2 <span class="token operator">=</span> Persona<span class="token punctuation">(</span><span class="token string">"Marco"</span><span class="token punctuation">,</span> <span class="token string">"Verdi"</span><span class="token punctuation">)</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona1<span class="token punctuation">.</span>nome<span class="token punctuation">)</span> <span class="token comment">#Luca</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span>persona2<span class="token punctuation">.</span>nome<span class="token punctuation">)</span> <span class="token comment">#Marco</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> METODI <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
<span class="token keyword keyword-class">class</span> <span class="token class-name">Persona</span><span class="token punctuation">:</span>
<span class="token keyword keyword-def">def</span> <span class="token function">__init__</span><span class="token punctuation">(</span>self<span class="token punctuation">,</span> nome<span class="token punctuation">,</span> cognome<span class="token punctuation">)</span><span class="token punctuation">:</span>
self<span class="token punctuation">.</span>nome <span class="token operator">=</span> nome
self<span class="token punctuation">.</span>cognome <span class="token operator">=</span> cognome
<span class="token keyword keyword-def">def</span> <span class="token function">saluta</span><span class="token punctuation">(</span>self<span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Ciao sono"</span> <span class="token operator">+</span> self<span class="token punctuation">.</span>nome<span class="token punctuation">)</span>
persona1 <span class="token operator">=</span> Persona<span class="token punctuation">(</span><span class="token string">"Luca"</span><span class="token punctuation">,</span> <span class="token string">"Rossi"</span><span class="token punctuation">)</span>
persona2 <span class="token operator">=</span> Persona<span class="token punctuation">(</span><span class="token string">"Marco"</span><span class="token punctuation">,</span> <span class="token string">"Verdi"</span><span class="token punctuation">)</span>
persona1<span class="token punctuation">.</span>saluta<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># Ciao sono Luca</span>
persona2<span class="token punctuation">.</span>saluta<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># Ciao sono Marco</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> MODIFICA <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
Per modificare la proprietà di un oggetto è semplice
persona2<span class="token punctuation">.</span>nome <span class="token operator">=</span> <span class="token string">"Maria"</span>
<span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span> DELETE <span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span><span class="token operator">-</span>
Per eliminare una proprietà semplicemente<span class="token punctuation">:</span>
<span class="token keyword keyword-del">del</span> persona2<span class="token punctuation">.</span>nome
Per eliminare un istanza oggetto
<span class="token keyword keyword-del">del</span> persona2
</code></pre><h2 id="span-idereditarietà-stylecolor-rgb34-211-238ereditarietàspan"><span id="ereditarietà" style="color: black">Ereditarietà</span> </h2>
<ul>
<li><a href="#indice" style="color: rgb(255, 102, 102); font-weight: bold; ">Torna all'indice</a></li>
</ul>
<h4>In questo paragrafo vedremo l'Ereditarietà in Python, come vengono definite e come funzionano:</h4>
<pre data-role="codeBlock" data-info="python" class="language-python python"><code><span class="token keyword keyword-class">class</span> <span class="token class-name">Persona</span><span class="token punctuation">:</span>
<span class="token keyword keyword-def">def</span> <span class="token function">__init__</span><span class="token punctuation">(</span>self<span class="token punctuation">,</span> nome<span class="token punctuation">,</span> cognome<span class="token punctuation">)</span><span class="token punctuation">:</span>
self<span class="token punctuation">.</span>nome <span class="token operator">=</span> nome
self<span class="token punctuation">.</span>cognome <span class="token operator">=</span> cognome
<span class="token keyword keyword-def">def</span> <span class="token function">saluta</span><span class="token punctuation">(</span>self<span class="token punctuation">)</span><span class="token punctuation">:</span>
<span class="token keyword keyword-print">print</span><span class="token punctuation">(</span><span class="token string">"Ciao sono"</span> <span class="token operator">+</span> self<span class="token punctuation">.</span>nome<span class="token punctuation">)</span>
<span class="token keyword keyword-class">class</span> <span class="token class-name">Insegnante</span><span class="token punctuation">(</span>Persona<span class="token punctuation">)</span><span class="token punctuation">:</span> <span class="token comment"># La classe ereditata</span>
<span class="token keyword keyword-pass">pass</span> <span class="token comment"># Per test (pass vuol dire passare avanti)</span>
persona1 <span class="token operator">=</span> Persona<span class="token punctuation">(</span><span class="token string">"Luca"</span><span class="token punctuation">,</span> <span class="token string">"Rossi"</span><span class="token punctuation">)</span>
insegnante1 <span class="token operator">=</span> Insegnante<span class="token punctuation">(</span><span class="token string">"Mario"</span><span class="token punctuation">,</span> <span class="token string">"Bianchi"</span><span class="token punctuation">)</span>
persona1<span class="token punctuation">.</span>saluta<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># Ciao sono Luca</span>
insegnante1<span class="token punctuation">.</span>saluta<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment"># Ciao sono Mario</span>
<span class="token comment"># L'init della classe Insegnante andrà a fare l'override del init di persona. </span>