Python - Functions Without returns

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Introduction

In Python functions, return statements are optional.

When a function doesn't return a value explicitly, the function exits when control falls off the end of the function body.

Technically, all functions return a value; if you don't provide a return statement, your function returns the None object automatically:

Demo

def proc(x): 
  print(x)                 # No return is a None return 
# from   ww w .  j  a v  a 2  s .c  o  m
x = proc('testing 123...') 
print(x)

Result

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