Put Functions into Modules

https://www.section.io/engineering-education/how-to-store-your-python-functions-into-modules/

Static Variables in Classes

https://www.geeksforgeeks.org/g-fact-34-class-or-static-variables-in-python/

create an array of numbers 1 to N

https://www.adamsmith.haus/python/answers/how-to-create-an-array-of-numbers-1-to-n-in-python

Create two dimensional array

https://stackoverflow.com/questions/6667201/how-to-define-a-two-dimensional-array

Slicing arrays, lists, and strings

Syntax:
Examples:
returns the first three elements of my_array. returns every other element of my_array. returns every element of my_array, except the last 10 elements.

kwargs

https://www.geeksforgeeks.org/args-kwargs-python/
https://realpython.com/python-kwargs-and-args/

Pretty Print

https://docs.python.org/3/library/pprint.html
https://realpython.com/python-pretty-print/

Putting a simple if-then-else statement on one line

https://stackoverflow.com/questions/2802726/putting-a-simple-if-then-else-statement-on-one-line

Accessing the index in 'for' loops

https://stackoverflow.com/questions/522563/accessing-the-index-in-for-loops

Ordered Sets

By default, sets are unordered https://www.w3schools.com/python/python_sets.asp

Python List sort()

https://www.programiz.com/python-programming/methods/list/sort

Parentheses, Square Brackets and Curly Braces in Python

https://discovery.cs.illinois.edu/guides/Python-Fundamentals/brackets/