is it necessary to use the return? why should I use the return?

Question

Hello sololearnesrs,

this code is from the book Head First Learn to code. Eric Freeman
the result of this code is the same with or without the return answer

def get_attribute(query, default):
question = query + ' [' + default + ']? '
answer = input(question)
if (answer == ''):
answer = default
print('You chose', answer)
return answer

hair = get_attribute('What hair color', 'brown')
hair_length = get_attribute('What hair length', 'short')
eye = get_attribute('What eye color', 'blue')
gender = get_attribute('What gender', 'female')
glasses = get_attribute('Has glasses', 'no')
beard = get_attribute('Has beard', 'no')

thank you very much

Answer 1

This code always displays the correct values only because the output is inside the function. Try to output the values of variables after assigning them the results of functions. Example: https://code.sololearn.com/cDijg5jBgLvU/#py

Answer 2

if i do not use the return
the value is None

What hair color [brown]? You chose red hair = None
great!!!

Answer 3

hello
thank you