Python Exercise.ipynb

{"cells":[{"metadata":{},"id":"nearby-arctic","cell_type":"markdown","source":"# Virtual Insight Week 2021"},{"metadata":{},"id":"potential-muslim","cell_type":"markdown","source":"## Beginner Python Exercise"},{"metadata":{},"id":"instructional-termination","cell_type":"markdown","source":"### The following workbook will give you a brief introduction to some basic functionality in Python, along with a few exercises at the end.\n\n### Do as much as you can of the exercise, and use your breakout groups if you need a hand :)"},{"metadata":{},"id":"proprietary-tower","cell_type":"markdown","source":"## Variables and Printing"},{"metadata":{},"id":"productive-ownership","cell_type":"markdown","source":"### We can set variables to have certain values in Python:"},{"metadata":{"trusted":false},"id":"plain-vertical","cell_type":"code","source":"a = 4\nb = 10\nx = \"hello\"","execution_count":1,"outputs":[]},{"metadata":{},"id":"operating-killer","cell_type":"markdown","source":"### The 'print()' function can be used to output to the terminal:"},{"metadata":{"trusted":false},"id":"authentic-shuttle","cell_type":"code","source":"print(\"hello\")","execution_count":2,"outputs":[{"output_type":"stream","text":"hello\n","name":"stdout"}]},{"metadata":{},"id":"tough-termination","cell_type":"markdown","source":"### Print can also take in variables:"},{"metadata":{"trusted":false},"id":"indonesian-convert","cell_type":"code","source":"print(a)\n\nprint(a + b)\n\nprint(x)\n\n# print(a + c) - throws a TypeError","execution_count":3,"outputs":[{"output_type":"stream","text":"4\n14\nhello\n","name":"stdout"}]},{"metadata":{},"id":"executed-manitoba","cell_type":"markdown","source":"## Mathematical Operations"},{"metadata":{"trusted":false},"id":"diagnostic-pendant","cell_type":"code","source":"print(a + b)\nprint(a - b)\nprint(a * b)\nprint(a / b)","execution_count":4,"outputs":[{"output_type":"stream","text":"14\n-6\n40\n0.4\n","name":"stdout"}]},{"metadata":{"trusted":false},"id":"solar-probability","cell_type":"code","source":"c = a + b\n\nprint(c)","execution_count":5,"outputs":[{"output_type":"stream","text":"14\n","name":"stdout"}]},{"metadata":{},"id":"grateful-bench","cell_type":"markdown","source":"## Functions"},{"metadata":{"trusted":false},"id":"tropical-prompt","cell_type":"code","source":"# a = 3\n# b = 7\n\ndef times_two_numbers():\n    a = 3\n    b = 7\n    c = a * b\n#     return c\n\nprint(times_two_numbers())","execution_count":6,"outputs":[{"output_type":"stream","text":"None\n","name":"stdout"}]},{"metadata":{"trusted":false},"id":"approved-stylus","cell_type":"code","source":"def times_two_input_numbers(a, b):\n    c = a * b\n    return c\n\nprint(times_two_input_numbers(4, 4))","execution_count":7,"outputs":[{"output_type":"stream","text":"16\n","name":"stdout"}]},{"metadata":{},"id":"eleven-short","cell_type":"markdown","source":"### Functions can have optional arguments, which require a 'for' loop:"},{"metadata":{"trusted":false},"id":"prescribed-ceremony","cell_type":"code","source":"def add_some_numbers(a, b, *args):\n    c = a + b\n    for x in args:\n        c += x\n    return c\n\nprint(add_some_numbers(3, 4, 5, 7))","execution_count":11,"outputs":[{"output_type":"stream","text":"19\n","name":"stdout"}]},{"metadata":{},"cell_type":"markdown","source":"### For loops can be useful for arrays:"},{"metadata":{"trusted":true},"cell_type":"code","source":"some_numbers = [0, 1, 1, 2, 3, 5, 8]\n\nfor x in some_numbers:\n    print(x)","execution_count":1,"outputs":[{"output_type":"stream","text":"0\n1\n1\n2\n3\n5\n8\n","name":"stdout"}]},{"metadata":{},"cell_type":"markdown","source":"### Specific elements can be accessed in arrays:"},{"metadata":{"trusted":true},"cell_type":"code","source":"# Remember, array indexing starts from 0!\n\nsome_numbers[3]","execution_count":3,"outputs":[{"output_type":"execute_result","execution_count":3,"data":{"text/plain":"2"},"metadata":{}}]},{"metadata":{},"id":"centered-sally","cell_type":"markdown","source":"### The input() function takes in a user input from the command line:"},{"metadata":{"trusted":false},"id":"regional-darkness","cell_type":"code","source":"def times_two_scanned_numbers():\n    a = int(input('Enter your first number: '))\n    b = int(input('Enter your second number: '))\n    c = a * b\n    return c\n\nprint(times_two_scanned_numbers())","execution_count":19,"outputs":[{"output_type":"stream","name":"stdout","text":"Enter your first number: 5\nEnter your second number: 6\n30\n"}]},{"metadata":{},"id":"abandoned-asian","cell_type":"markdown","source":"### Numbers that are decimals are a different type to whole numbers:"},{"metadata":{"trusted":false},"id":"weighted-minute","cell_type":"code","source":"def add_two_scanned_numbers():\n    a = float(input('Enter your first number: '))\n    b = float(input('Enter your second number: '))\n    c = a + b\n    return c\n\nprint(add_two_scanned_numbers())","execution_count":15,"outputs":[{"output_type":"stream","name":"stdout","text":"Enter your first number: 4.5\nEnter your second number: 3.4\n7.9\n"}]},{"metadata":{},"id":"equal-access","cell_type":"markdown","source":"### Function outputs can also be assigned to variables:"},{"metadata":{"trusted":false},"id":"conservative-aspect","cell_type":"code","source":"x = add_two_scanned_numbers()\ny = 3\nz = x + y\nprint(z)","execution_count":35,"outputs":[{"output_type":"stream","name":"stdout","text":"Enter your first number: 1\nEnter your second number: 2\n6\n"}]},{"metadata":{},"id":"cooperative-camel","cell_type":"markdown","source":"## Packages"},{"metadata":{"trusted":false},"id":"miniature-china","cell_type":"code","source":"from datetime import date\n\nprint(date.today())","execution_count":37,"outputs":[{"output_type":"stream","text":"2021-04-06\n","name":"stdout"}]},{"metadata":{},"id":"informative-reference","cell_type":"markdown","source":"## Exercise"},{"metadata":{},"id":"seven-polymer","cell_type":"markdown","source":"### One of THG's sites, MyProtein, needs a new checkout system to calculate the total order price of a customer's basket. Write a program that can add products from the list below and then apply a 15% discount, leading to a final price that is output to the terminal.\n\n### Optional: \n### - Make the program a function that can be ran, and returns the value of the final price\n### - Add a more 'user-friendly' feel to the program i.e. 'Thanks for your order. Your total price is: £x\"\n### - Require inputs to the program (either using 'input()' or coding them directly into the function)\n### - Any extra functionality you think would be a nice addition!"},{"metadata":{},"id":"third-henry","cell_type":"markdown","source":"### Products:"},{"metadata":{"trusted":false},"id":"widespread-memory","cell_type":"code","source":"# Make sure you press shift and enter on this box to add the variables to the Jupyter notebook's memory!\n\nwhey_protein = 8.99\nprotein_bar = 1.50\nworkout_leggings = 42.00\nmp_t_shirt = 15.00\nmultivitamin_tablets = 7.99\ncycling_shorts = 19.99\nshaker = 5.00\npre_workout = 39.99\nsugar_free_syrup = 6.49\nprotein_spread = 6.99","execution_count":18,"outputs":[]},{"metadata":{},"id":"french-wheel","cell_type":"markdown","source":"### Your Solution:"},{"metadata":{"trusted":false},"id":"trained-arbitration","cell_type":"code","source":"","execution_count":null,"outputs":[]}],"metadata":{"kernelspec":{"name":"python3","display_name":"Python 3","language":"python"},"language_info":{"name":"python","version":"3.7.10","mimetype":"text/x-python","codemirror_mode":{"name":"ipython","version":3},"pygments_lexer":"ipython3","nbconvert_exporter":"python","file_extension":".py"}},"nbformat":4,"nbformat_minor":5}