FAQ: Code Challenge: Control Flow - In Range


This community-built FAQ covers the “In Range” exercise from the lesson “Code Challenge: Control Flow”.

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This exercise can be found in the following Codecademy content:

Computer Science
Data Science

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Write your in_range function here:

def in_range(num, lower, upper):
if(num >= lower and num <= upper):
return True
return False

Uncomment these function calls to test your in_range function:

print(in_range(10, 10, 10))

should print True

print(in_range(5, 10, 20))

should print False

Why is there no “else” used in this function?


Whenever our if branch contains a return, and there is only a default return otherwise, we don’t need else.

if something:
    return True
return False

Control flow that does not pass the conditional will fall to the last line, which line will execute and send back the default return.


My question is instead,

why if I write

if something:
return True
return False

it doesn’t give any False output? It comes “None” instead of False…