Question

Is there any practical differences between using:

def some_function():
    print('Hello!')
    return()

and:

def some_function():
    print('Hello!')

I know that return isn’t required, but is it bad pratice to not return after a function has been called?

Answer 1

First of all, return is not a function; it is a statement. There is no need to add the parenthesis.

Functions in python without a return statement return None by default. An empty return statement does the same, so there is no difference.

>>> def foo(): return
...
>>> foo()
None
>>> def bar(): pass
...
>>> bar()
None