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Extra Lab 4 - Solved #83

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218 changes: 192 additions & 26 deletions lab-python-list-comprehension.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -74,9 +74,34 @@
"execution_count": null,
"id": "21625526-3fae-4c55-bab5-f91940070681",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"['Open', 'Open', 'Senior', 'Open', 'Open', 'Senior']\n"
]
}
],
"source": [
"# your code goes here"
"def open_or_senior(data):\n",
" return [\n",
" \"Senior\" if age >= 55 and handicap > 7 else \"Open\"\n",
" for age, handicap in data\n",
" ]\n",
"\n",
"input_data = [[18, 20], [45, 2], [61, 12], [37, 6], [21, 21], [78, 9]]\n",
"\n",
"output = open_or_senior(input_data)\n",
"\n",
"print(output)\n",
"\n",
"\n",
"## Lambda alternative\n",
"\"\"\"open_or_senior = lambda data: [\n",
" \"Senior\" if a >= 55 and h > 7 else \"Open\"\n",
" for a, h in data\n",
"]\"\"\""
]
},
{
Expand All @@ -95,12 +120,29 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 2,
"id": "53061dce-7aa3-4476-8b56-71413c5e135c",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"23\n"
]
}
],
"source": [
"# your code goes here"
"def solution(number):\n",
" if number < 0:\n",
" return 0\n",
" \n",
" return sum(\n",
" n for n in range(number)\n",
" if n % 3 == 0 or n % 5 == 0\n",
" )\n",
"\n",
"print(solution(10))"
]
},
{
Expand Down Expand Up @@ -130,9 +172,37 @@
"execution_count": null,
"id": "a8cb1579-7065-4fc0-bd53-f91c2ad1dad9",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[1, 2, 3]\n",
"[1]\n",
"[8, 6, 7, 5, 3, 0, 9]\n"
]
}
],
"source": [
"# your code goes here"
"def digitize(n):\n",
" return [int(d) for d in str(n)]\n",
"\n",
"print(digitize(123)) # [1, 2, 3]\n",
"print(digitize(1)) # [1]\n",
"print(digitize(8675309)) # [8, 6, 7, 5, 3, 0, 9]\n",
"\n",
"##Alternative (without converting to string)\n",
"\n",
"\"\"\"def digitize(n):\n",
" digits = []\n",
" if n == 0:\n",
" return [0]\n",
" \n",
" while n > 0:\n",
" digits.append(n % 10)\n",
" n //= 10\n",
" \n",
" return digits[::-1]\"\"\""
]
},
{
Expand All @@ -155,12 +225,27 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 6,
"id": "86ebe759-76d8-4012-8590-c48a473a6099",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[-1, -2, -3, -4, -5]\n",
"[-1, 2, -3, 4, -5]\n",
"[]\n"
]
}
],
"source": [
"# your code goes here"
"def invert(lst):\n",
" return [-x for x in lst]\n",
"\n",
"print(invert([1,2,3,4,5])) # [-1,-2,-3,-4,-5]\n",
"print(invert([1,-2,3,-4,5])) # [-1,2,-3,4,-5]\n",
"print(invert([])) # []"
]
},
{
Expand Down Expand Up @@ -196,9 +281,34 @@
"execution_count": null,
"id": "6711881b-450a-44cb-a3d0-367b2c6a4464",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"1 -> 1\n",
"2 -> 4\n",
"3 -> 9\n",
"4 -> 16\n",
"5 -> 25\n",
"6 -> 36\n",
"7 -> 49\n",
"8 -> 64\n",
"9 -> 81\n",
"10 -> 100\n",
"11 -> 121\n",
"12 -> 144\n",
"13 -> 169\n",
"14 -> 196\n",
"15 -> 225\n"
]
}
],
"source": [
"# your code goes here"
"squares = {x: x**2 for x in range(1, 16)}\n",
"\n",
"# for k, v in squares.items():\n",
"# print(f\"{k} -> {v}\")"
]
},
{
Expand All @@ -220,12 +330,23 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 10,
"id": "a1d55cea-96c3-4853-8220-17c0904a8816",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[(1, 3), (1, 4), (2, 3), (2, 4)]\n"
]
}
],
"source": [
"# your code goes here"
"def all_pairs(list1, list2):\n",
" return [(x, y) for x in list1 for y in list2]\n",
"\n",
"print(all_pairs([1, 2], [3, 4]))\n"
]
},
{
Expand All @@ -246,12 +367,25 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 11,
"id": "0175239c-87fa-4ba0-8776-d62567256db7",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[('a', 1), ('a', 2), ('b', 3), ('b', 4)]\n"
]
}
],
"source": [
"# your code goes here"
"def expand_dict(d):\n",
" return [(key, value) for key, values in d.items() for value in values]\n",
"\n",
"data = {\"a\": [1, 2], \"b\": [3, 4]}\n",
"\n",
"print(expand_dict(data))"
]
},
{
Expand Down Expand Up @@ -281,12 +415,30 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 12,
"id": "248918d0-f082-40a8-9d5c-c7b4ffd2bfca",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[(1, 3), (1, 4), (2, 3), (2, 4), (5, 7), (5, 8), (6, 7), (6, 8)]\n"
]
}
],
"source": [
"# your code goes here"
"def all_pairs_from_tuples(data):\n",
" return [\n",
" (x, y)\n",
" for list1, list2 in data\n",
" for x in list1\n",
" for y in list2\n",
" ]\n",
"\n",
"input_data = [([1, 2], [3, 4]), ([5, 6], [7, 8])]\n",
"\n",
"print(all_pairs_from_tuples(input_data))"
]
},
{
Expand All @@ -308,18 +460,32 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 14,
"id": "c57d9e77-6859-45dd-a2e6-2c1898f1baa2",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{('a', 'd'), ('c', 'b'), ('c', 'd'), ('a', 'b')}\n"
]
}
],
"source": [
"# your code goes here"
"def char_pairs(strings):\n",
" first_chars = [s[0] for s in strings]\n",
" second_chars = [s[1] for s in strings]\n",
" \n",
" return {(x, y) for x in first_chars for y in second_chars}\n",
"\n",
"print(char_pairs([\"ab\", \"cd\"]))\n"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "base",
"language": "python",
"name": "python3"
},
Expand All @@ -333,7 +499,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.9"
}
},
"nbformat": 4,
Expand Down