python function return none

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.

1. Why does my python function return None?
2. Should I return none in Python?
3. How do I stop python from returning None?
4. Can a function return nothing?
5. What is returned by functions that don't have a return statement Python?
6. Does Python function always return a value?
7. Is return the same as return None?
8. What is the point of return in Python?
9. What does None mean in Python?
10. How do I fix none in Python?
11. Can you have two return statements in a function Python?
12. What is the Do Nothing function in Python?

Why does my python function return None?

If we get to the end of any function and we have not explicitly executed any return statement, Python automatically returns the value None. Some functions exists purely to perform actions rather than to calculate and return a result. Such functions are called procedures.

Should I return none in Python?

8 Answers. There is no such thing as "returning nothing" in Python. Every function returns some value (unless it raises an exception). If no explicit return statement is used, Python treats it as returning None .

How do I stop python from returning None?

Python will always return None , if no return is specified at the point of exiting the function call. Your options are: return something else if the condition is not met. ignore the function if it returns None.

Can a function return nothing?

Void functions are created and used just like value-returning functions except they do not return a value after the function executes. ... You may or may not use the return statement, as there is no return value. Even without the return statement, control will return to the caller automatically at the end of the function.

What is returned by functions that don't have a return statement Python?

A function in Python is defined with the def keyword. Functions do not have declared return types. A function without an explicit return statement returns None . In the case of no arguments and no return value, the definition is very simple.

Does Python function always return a value?

A Python function will always have a return value. There is no notion of procedure or routine in Python. So, if you don't explicitly use a return value in a return statement, or if you totally omit the return statement, then Python will implicitly return a default value for you.

Is return the same as return None?

Yes, they are all the same. We can review the interpreted machine code to confirm that that they're all doing the exact same thing. They each return the same singleton None -- There is no functional difference.

What is the point of return in Python?

A return statement is used to end the execution of the function call and “returns” the result (value of the expression following the return keyword) to the caller. The statements after the return statements are not executed. If the return statement is without any expression, then the special value None is returned.

What does None mean in Python?

The None keyword is used to define a null value, or no value at all. None is not the same as 0, False, or an empty string. None is a data type of its own (NoneType) and only None can be None.

How do I fix none in Python?

Without a return statement this defaults to none. It can be fixed by adding a return statement on each conditional statement and removing the print.

Can you have two return statements in a function Python?

A function can have multiple return statements. When any of them is executed, the function terminates.

What is the Do Nothing function in Python?

In Python, to write empty functions, we use pass statement. pass is a special statement in Python that does nothing. It only works as a dummy statement. We can use pass in empty while statement also.