Forked from GuillaumeRouja/Python 6 : Functions.ipynb
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January 17, 2019 21:21
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Functions
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| { | |
| "nbformat_minor": 1, | |
| "cells": [ | |
| { | |
| "execution_count": 5, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "1 if you add 1 2\n" | |
| }, | |
| { | |
| "execution_count": 5, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "2" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# First function example: Add 1 to a and store as b\n\ndef add1(a):\n b=a+1\n print(a,\"if you add 1\",b)\n return b\n\na=1\nadd1(a)\n" | |
| }, | |
| { | |
| "execution_count": 6, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "Help on function add1 in module __main__:\n\nadd1(a)\n\n" | |
| } | |
| ], | |
| "source": "# Get a help on add function\n\nhelp(add1)" | |
| }, | |
| { | |
| "execution_count": 7, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 7, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "6" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# Define a function to multiply number\n\ndef mult(a,b):\n c=a*b\n return c\na=2\nb=3\nmult(a,b)" | |
| }, | |
| { | |
| "execution_count": 10, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 10, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "'Michael Jackson Michael Jackson '" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "#Use mult() multiply two different type values together\n\nmult(2, \"Michael Jackson \")" | |
| }, | |
| { | |
| "execution_count": 13, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "2 if you square + 1 5\n" | |
| }, | |
| { | |
| "execution_count": 13, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "5" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "#Use of local variable + directly enter a parameter to call the function\n\ndef square(a):\n b=1\n c=a*a+b\n print(a, \"if you square + 1\", c) \n return(c)\n\nsquare(2)" | |
| }, | |
| { | |
| "execution_count": 17, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "Michael Jackson\nNone\nMichael Jackson\nNone\n" | |
| } | |
| ], | |
| "source": "# Define functions, one with return value None and other without return value -> those functions are equivalent\n\ndef MJ():\n print('Michael Jackson')\n \ndef MJ1():\n print('Michael Jackson')\n return(None)\n\nprint(MJ())\nprint(MJ1())" | |
| }, | |
| { | |
| "execution_count": 19, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 19, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "'guillaume is the best'" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# Define the function for combining strings\n\ndef con(a, b):\n return(a + b)\n\ncon (\"guillaume\", \" is the best\")" | |
| }, | |
| { | |
| "execution_count": 2, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 2, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "5" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# Make a Function for the calculation above\n\ndef Equation(a,b):\n c = a + b + 2 * a * b - 1\n if(c < 0):\n c = 0 \n else:\n c = 5\n return(c) \n\nEquation (1,2)" | |
| }, | |
| { | |
| "execution_count": 3, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "[10.0, 8.5, 9.5, 7.0, 7.0, 9.5, 9.0, 9.5]\n" | |
| } | |
| ], | |
| "source": "# Build-in function print()\n\nalbum_ratings = [10.0, 8.5, 9.5, 7.0, 7.0, 9.5, 9.0, 9.5] \nprint(album_ratings)" | |
| }, | |
| { | |
| "execution_count": 4, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 4, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "70.0" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# Use sum() to add every element in a list or tuple together\n\nsum(album_ratings)" | |
| }, | |
| { | |
| "execution_count": 5, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 5, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "8" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# Show the length of the list or tuple\n\nlen(album_ratings)" | |
| }, | |
| { | |
| "execution_count": 6, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "Michael Jackson Thriller 1980\nOldie\n" | |
| } | |
| ], | |
| "source": "# Function example\n\ndef type_of_album(artist, album, year_released):\n \n print(artist, album, year_released)\n if year_released > 1980:\n return \"Modern\"\n else:\n return \"Oldie\"\n \nx = type_of_album(\"Michael Jackson\", \"Thriller\", 1980)\nprint(x)" | |
| }, | |
| { | |
| "execution_count": 10, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "orange\nblack\ngreen\n" | |
| } | |
| ], | |
| "source": "# Print the list using for loop\n\nthe_list=['orange','black','green']\n\ndef PrintList(the_list):\n for element in the_list:\n print(element)\n \nPrintList(the_list)" | |
| }, | |
| { | |
| "execution_count": 15, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "this album sucks it's rating is 4\nthis album is good its rating is 10\n" | |
| } | |
| ], | |
| "source": "# Example for setting param with default value\n\ndef isGoodRating(rating=4): \n if(rating < 7):\n print(\"this album sucks it's rating is\",rating)\n \n else:\n print(\"this album is good its rating is\",rating)\n \nisGoodRating()\nisGoodRating(10)" | |
| }, | |
| { | |
| "execution_count": 16, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "Michael Jackson is an artist\n" | |
| } | |
| ], | |
| "source": "# Example of global variable\n\nartist = \"Michael Jackson\"\ndef printer1(artist):\n internal_var = artist\n print(artist, \"is an artist\")\n \nprinter1(artist)" | |
| }, | |
| { | |
| "execution_count": 17, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "Michael Jackson is an artist\nWhitney Houston is an artist\n" | |
| } | |
| ], | |
| "source": "# Converting a local variable in a global one so it can be used outside the function:\n\nartist = \"Michael Jackson\"\n\ndef printer(artist):\n global internal_var \n internal_var= \"Whitney Houston\"\n print(artist,\"is an artist\")\n\nprinter(artist) \nprinter(internal_var)" | |
| }, | |
| { | |
| "execution_count": 18, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "AC/DC's rating is: 10.0\nDeep Purple's rating is: 0.0\nMy favourite band is: AC/DC\n" | |
| } | |
| ], | |
| "source": "# Example of global variable\n\nmyFavouriteBand = \"AC/DC\"\n\ndef getBandRating(bandname):\n if bandname == myFavouriteBand:\n return 10.0\n else:\n return 0.0\n\nprint(\"AC/DC's rating is:\", getBandRating(\"AC/DC\"))\nprint(\"Deep Purple's rating is:\",getBandRating(\"Deep Purple\"))\nprint(\"My favourite band is:\", myFavouriteBand)" | |
| }, | |
| { | |
| "execution_count": 20, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "output_type": "stream", | |
| "name": "stdout", | |
| "text": "AC/DC's rating is: 0.0\nDeep Purple's rating is: 10.0\nMy favourite band is: AC/DC\n" | |
| } | |
| ], | |
| "source": "# Example of global variable and local variable with the same name\n\nmyFavouriteBand = \"AC/DC\"\n\ndef getBandRating(bandname):\n myFavouriteBand = \"Deep Purple\"\n if bandname == myFavouriteBand:\n return 10.0\n else:\n return 0.0\n\nprint(\"AC/DC's rating is:\",getBandRating(\"AC/DC\"))\nprint(\"Deep Purple's rating is: \",getBandRating(\"Deep Purple\"))\nprint(\"My favourite band is:\",myFavouriteBand)" | |
| }, | |
| { | |
| "execution_count": 22, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 22, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "2.0" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# Come up with a function that divides the first input by the second input:\n\ndef divide(a,b):\n return(a/b)\ndivide (4,2)" | |
| }, | |
| { | |
| "execution_count": 26, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 26, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "4" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "# Use the defined 'con' function\n\ncon(2,2)\n" | |
| }, | |
| { | |
| "execution_count": 27, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 27, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "'guillaume is the best'" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "def con(a, b):\n return(a + b)\n\ncon('guillaume',' is the best')" | |
| }, | |
| { | |
| "execution_count": 37, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 37, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "('hello', 1, '2', 2, 1)" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "tuple1 =(\"hello\",1)\ntuple2=(\"2\",2,1)\ncon(tuple1,tuple2)\n" | |
| }, | |
| { | |
| "execution_count": 36, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [ | |
| { | |
| "execution_count": 36, | |
| "metadata": {}, | |
| "data": { | |
| "text/plain": "['orange', 'black', 'white', 'fuschia']" | |
| }, | |
| "output_type": "execute_result" | |
| } | |
| ], | |
| "source": "list1 =['orange','black','white']\nlist2 = ['fuschia']\ncon(list1,list2)" | |
| }, | |
| { | |
| "execution_count": null, | |
| "cell_type": "code", | |
| "metadata": {}, | |
| "outputs": [], | |
| "source": "" | |
| } | |
| ], | |
| "metadata": { | |
| "kernelspec": { | |
| "display_name": "Python 3.5", | |
| "name": "python3", | |
| "language": "python" | |
| }, | |
| "language_info": { | |
| "mimetype": "text/x-python", | |
| "nbconvert_exporter": "python", | |
| "version": "3.5.5", | |
| "name": "python", | |
| "file_extension": ".py", | |
| "pygments_lexer": "ipython3", | |
| "codemirror_mode": { | |
| "version": 3, | |
| "name": "ipython" | |
| } | |
| } | |
| }, | |
| "nbformat": 4 | |
| } |
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