What does a Python function return if it has no return statement in it?

Question

If no return statement is specified in a function, what value will it return?

Answer 1

A function returns the None object by default if the "return" statement is not mentioned in the function. A return statement with no expression in it also returns None.

Here are examples:

Without return statement

>>> def fnc(a,b):
...     c=a+b
...
>>> print(fnc(2,3))
None

Return without any expression

>>> def fnc(a,b):
...     c=a+b
...     return
...
>>> print(fnc(2,3))
None