Ludium - Learn by Doing

Return an Even Check

Write a function is_even(n) that takes an integer n and returns the Boolean True when n is even and False when n is odd. Your function must return its answer: a function that only prints its result still hands back None, and the tests check the returned value.

Examples:

is_even(4)   -> True
is_even(7)   -> False
is_even(0)   -> True
is_even(-2)  -> True

def is_even(n):
    '''Return True if the integer n is even, False if it is odd.'''
    pass

def is_even(n):
    '''Return True if the integer n is even, False if it is odd.'''
    pass

Scratchpad— run any Python to test ideas

# Scratchpad — run any Python here to test ideas.
# Anything you write below stays separate from the problem's tests.

print("hello, world")

# Scratchpad — run any Python here to test ideas.
# Anything you write below stays separate from the problem's tests.

print("hello, world")

Python runtime ready in a moment

Visible tests · 2Examples — click to expand

is_even(4) returns True

is_even(7) returns False

Hidden tests · 3Bodies hidden — pass/fail only

Hidden test 1

Hidden test 2

Hidden test 3

Coding challenges on functions in depth: scope, objects, and higher-order functions

Return an Even Check

Coding challenges on functions in depth: scope, objects, and higher-order functions

Return an Even Check