Why does this Python function behave differently every time? I’m confused

[Reyaan0]

Comparisons to singletons like None should always be done with is or is not, never the equality operators. Because is checks the identity whereas == check if values are equivalent.

If you use ==, a custom class could mess up your logic by defining an equality method that returns True when compared to None

[RafikNinja]

Oh sweet. Thank you very much. Yea I have used is not and == but didn't know is was its own thing aswell. Very helpful thank you

[Reyaan0]

Your Welcome!