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Function basics
7. Functions with return values


Good. Functions can also return some values. For instance, when you execute isnumeric(), the function returns either True or False.

def factorial(number):
  score = 1
  while number > 1:
    score = score * number
    number = number - 1
  return score

The program above takes an input number and returns its factorial (e.g., for number = 4, the function will return 4*3*2*1 = 24). The return keyword terminates the function and makes it return the value specified after the return keyword to the caller.


Write a function named return_bigger(a, b) that takes two numbers and returns the bigger one. If the numbers are equal, return 0.

Stuck? Here's a hint!

Use a simple if statement:

if a > b:
  return ...
elif b > a:
  return ...
  return 0