Why does my Python program print None?

Why does my Python program print None?

It is because you are having two print statements. The print statement inside function prints your answer however the print which is calling the function ‘fact()’ has nothing to print returned by the function hence it prints ‘None’. Remove the print statement inside the function and add ‘return’ in place of print.

Is none the same as void?

In python, None is the type used for nothing being return. In languages borrowing from the C style syntax void is used instead. In short void means nothing in python.

What happens when you return void?

A void function cannot return any values. It indicates that the function is terminated. It increases the readability of code.

How do you stop returning None in Python?

Your options are:

1. return something else if the condition is not met.
2. ignore the function if it returns None.

How do I get rid of None in Python?

Python | Remove None values from list

1. Method #1 : Naive Method. In naive method, we iterate through the whole list and append all the filtered, non-None values into a new list, hence ready to be performed with subsequent operations.
2. Method #2 : Using list comprehension.
3. Method #3 : Using filter()

What does void mean in Python?

In Python, it is possible to compose a function without a return statement. Functions like this are called void, and they return None, Python’s special object for “nothing”.

How do you return a void in Python?

Functions like this are called void, and they return None, Python’s special object for “nothing”. Also a simple return is equivalent to return None if you want to do it in the middle of function.

Does a void method return null?

Since void has no denotable value, no value can be returned. (I’ve argued for years that a zero-bit type does have a value — exactly one — and void variables should be legal; only the functional programming people seem to agree.) For Void, you should return null, for the keyword void please read on.

What is the point of a void function?

When used as a function return type, the void keyword specifies that the function doesn’t return a value. When used for a function’s parameter list, void specifies that the function takes no parameters.

What does return None mean in Python?

In Python, every function returns something. If there are no return statements, then it returns None. If the return statement contains an expression, it’s evaluated first and then the value is returned.