Must-do problems: Functions

90 min · Beginner

These are the function problems every Python beginner should be able to solve, from a one-line square to the Tower of Hanoi. Write the function first, then the few lines that read the input and print the answer. Trace each one on paper with a small input, then check your program against every test.

What you will learn

Move a calculation into a function that returns its result
Use default arguments, *args and several return values
Write recursive functions with a base case
Split a bigger task into small helper functions

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