useless-return (PLR1711)

Derived from the Pylint linter.

Fix is always available.

What it does

Checks for functions that end with an unnecessary return or return None, and contain no other return statements.

Why is this bad?

Python implicitly assumes a None return at the end of a function, making it unnecessary to explicitly write return None.

Example

def f():
    print(5)
    return None

Use instead:

def f():
    print(5)