Python_Practice_Problems_Assignment

#Count_Positives.py

@@ -0,0 +1,13 @@
+#Count Positives - Given a list of numbers, create a function to replace last value with number of positive values. Example, count_positives([-1,1,1,1]) changes list #to [-1,1,1,3] and returns it.  (Note that zero is not considered to be a positive number).
+def count_positives(array):
+    count = 0
+    for val in array:
+        if val > 0:
+            count += 1
+    array[len(array)-1] = count
+    return array
+print(count_positives([-1,1,1,1]))
+
+
+
+

APIconnectionMySQL.ipynb

@@ -0,0 +1,108 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import mysql.connector as mariadb"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Open database connection using connect method"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "connecting to database...\n"
+     ]
+    }
+   ],
+   "source": [
+    "con = mariadb.connect(\n",
+    "    host = \"localhost\",\n",
+    "    user  = \"root\",\n",
+    "    password = \"password\",\n",
+    "    database = \"classicmodels\"\n",
+    ")\n",
+    "print(\"connecting to database...\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[('Motorcycles', 13)]\n"
+     ]
+    }
+   ],
+   "source": [
+    "cur = con.cursor()\n",
+    "st = \"Select productLine, count(*) from products where productLine = '{}'\"\n",
+    "cur.execute(st.format('Motorcycles'))\n",
+    "result = cur.fetchall()\n",
+    "print(result)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "con.close()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)]"
+  },
+  "orig_nbformat": 4,
+  "vscode": {
+   "interpreter": {
+    "hash": "8b70a4ea831fd5b9b770fab33cac3f0a285469b7491720cba6f6d634f19e8405"
+   }
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}

APIfunctionsMySQL.ipynb

@@ -0,0 +1,244 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import mysql.connector as mdb1"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "connected to database...\n",
+      "User_table created\n"
+     ]
+    }
+   ],
+   "source": [
+    "def generate_user_table():\n",
+    "    con = mdb1.connect(\n",
+    "          host = \"localhost\",\n",
+    "          user  = \"root\",\n",
+    "          password = \"password\",\n",
+    "          database = \"test_db\"\n",
+    "    \n",
+    "        )\n",
+    "    print(\"connected to database...\")\n",
+    "    cur = con.cursor()\n",
+    "    st1 = \"Create table user_table2(email varchar(100), name varchar(50), password varchar(30))\"\n",
+    "    st2 = \"Insert into user_table2 \\\n",
+    "          (email, name, password) VALUES \\\n",
+    "          ('ywbaek@perscholas.org', 'young', 'letsgomets'), \\\n",
+    "          ('mcordon@perscholas.org', 'marcial', 'perscholas'), \\\n",
+    "          ('mhaseeb@perscholas.org', 'haseeb', 'platform') \"\n",
+    "     \n",
+    "    cur.execute(st1)\n",
+    "    cur.execute(st2)\n",
+    "    print('User_table created')\n",
+    "    con.commit()\n",
+    "    con.close()\n",
+    "\n",
+    "    \n",
+    "\n",
+    "\n",
+    "generate_user_table()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "connected to database...\n",
+      "[('ywbaek@perscholas.org', 'young', 'letsgomets'), ('mcordon@perscholas.org', 'marcial', 'perscholas'), ('mhaseeb@perscholas.org', 'haseeb', 'platform')]\n"
+     ]
+    }
+   ],
+   "source": [
+    "def get_all_users():\n",
+    "    con = mdb1.connect(\n",
+    "          host = \"localhost\",\n",
+    "          user  = \"root\",\n",
+    "          password = \"password\",\n",
+    "          database = \"test_db\"\n",
+    "    \n",
+    "        )\n",
+    "    print(\"connected to database...\")\n",
+    "    cur = con.cursor()\n",
+    "    st = \"Select * from user_table2\"\n",
+    "    cur.execute(st)\n",
+    "    result = cur.fetchall()\n",
+    "    print(result)\n",
+    "    con.close()\n",
+    "\n",
+    "get_all_users()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "connected to database...\n",
+      "[('ywbaek@perscholas.org', 'letsgomets')]\n"
+     ]
+    }
+   ],
+   "source": [
+    "def get_user_by_name(name):\n",
+    "    con = mdb1.connect(\n",
+    "          host = \"localhost\",\n",
+    "          user  = \"root\",\n",
+    "          password = \"password\",\n",
+    "          database = \"test_db\"\n",
+    "    \n",
+    "        )\n",
+    "    print(\"connected to database...\")\n",
+    "    cur = con.cursor()\n",
+    "    st = \"SELECT email, password FROM user_table2 WHERE name = '{}'\"\n",
+    "    cur.execute(st.format(name))\n",
+    "\n",
+    "    result = cur.fetchall()\n",
+    "    print(result)\n",
+    "    con.close()\n",
+    "\n",
+    "get_user_by_name('young')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "connected to database...\n",
+      "True\n"
+     ]
+    }
+   ],
+   "source": [
+    "def validate_user(email, password):\n",
+    "    con = mdb1.connect(\n",
+    "          host = \"localhost\",\n",
+    "          user  = \"root\",\n",
+    "          password = \"password\",\n",
+    "          database = \"test_db\"\n",
+    "    \n",
+    "        )\n",
+    "    print(\"connected to database...\")\n",
+    "    cur = con.cursor()\n",
+    "    st = \"SELECT email, password FROM user_table2 WHERE email = '{}' and password = '{}'\"\n",
+    "    cur.execute(st.format(email, password))\n",
+    "    result = cur.fetchall()\n",
+    "    if result != []:\n",
+    "       return True\n",
+    "    if result == []:\n",
+    "       return False\n",
+    "       \n",
+    "    con.close()\n",
+    "    #return result   \n",
+    "       \n",
+    "    \n",
+    "\n",
+    "a = print(validate_user('ywbaek@perscholas.org', 'letsgomets'))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "connected to database...\n"
+     ]
+    },
+    {
+     "ename": "KeyError",
+     "evalue": "'name'",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[1;31mKeyError\u001b[0m                                  Traceback (most recent call last)",
+      "Cell \u001b[1;32mIn[10], line 19\u001b[0m\n\u001b[0;32m     16\u001b[0m     con\u001b[39m.\u001b[39mclose()\n\u001b[0;32m     17\u001b[0m     \u001b[39mreturn\u001b[39;00m result\n\u001b[1;32m---> 19\u001b[0m \u001b[39mprint\u001b[39m(update_user(\u001b[39m'\u001b[39;49m\u001b[39myoung\u001b[39;49m\u001b[39m'\u001b[39;49m, \u001b[39m'\u001b[39;49m\u001b[39mletsgomets\u001b[39;49m\u001b[39m'\u001b[39;49m, \u001b[39m'\u001b[39;49m\u001b[39mywbaek@perscholas.org\u001b[39;49m\u001b[39m'\u001b[39;49m))\n",
+      "Cell \u001b[1;32mIn[10], line 12\u001b[0m, in \u001b[0;36mupdate_user\u001b[1;34m(name, password, email)\u001b[0m\n\u001b[0;32m     10\u001b[0m cur \u001b[39m=\u001b[39m con\u001b[39m.\u001b[39mcursor()\n\u001b[0;32m     11\u001b[0m st \u001b[39m=\u001b[39m \u001b[39m\"\u001b[39m\u001b[39mUpdate user_table2 SET name = \u001b[39m\u001b[39m'\u001b[39m\u001b[39m{name}\u001b[39;00m\u001b[39m'\u001b[39m\u001b[39m and password = \u001b[39m\u001b[39m'\u001b[39m\u001b[39m{password}\u001b[39;00m\u001b[39m'\u001b[39m\u001b[39m where email = \u001b[39m\u001b[39m'\u001b[39m\u001b[39m{email}\u001b[39;00m\u001b[39m'\u001b[39m\u001b[39m\"\u001b[39m\n\u001b[1;32m---> 12\u001b[0m result \u001b[39m=\u001b[39m cur\u001b[39m.\u001b[39mexecute(st\u001b[39m.\u001b[39;49mformat(name, password, email))\n\u001b[0;32m     13\u001b[0m \u001b[39m#result = cur.fetchall()\u001b[39;00m\n\u001b[0;32m     14\u001b[0m \u001b[39mif\u001b[39;00m result:\n",
+      "\u001b[1;31mKeyError\u001b[0m: 'name'"
+     ]
+    }
+   ],
+   "source": [
+    "def update_user(name, password, email):\n",
+    "    con = mdb1.connect(\n",
+    "          host = \"localhost\",\n",
+    "          user  = \"root\",\n",
+    "          password = \"password\",\n",
+    "          database = \"test_db\"\n",
+    "    \n",
+    "        )\n",
+    "    print(\"connected to database...\")\n",
+    "    cur = con.cursor()\n",
+    "    st = \"Update user_table2 SET name = '{name}' and password = '{password}' where email = '{email}'\"\n",
+    "    cur.execute(st.format(name, password, email))\n",
+    "    result = cur.fetchall()\n",
+    "    \n",
+    "    if result != []:\n",
+    "        return True\n",
+    "        \n",
+    "    else:\n",
+    "        return False\n",
+    "    \n",
+    "\n",
+    "print(update_user('young', 'letsgomets', 'ywbaek@perscholas.org'))\n"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)]"
+  },
+  "orig_nbformat": 4,
+  "vscode": {
+   "interpreter": {
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+   }
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}