Another comment already explains that this is regular method overriding in Python. Surely, some languages call user-defined operators 'Operator overloading' (e.g. C#) but the mechanism which Python uses (an `object` base class) IS overriding.

As to overloading as in multiple signatures (No types here!) for the same method name, it is not possible in the regular sense in Python since an object is more or less a dictionary of names. However, the dynamicity of the language will happily allow you to simulate it with YOUR own rules for disambiguation if you like. In practice, you'd 1. Don't 2. *args, **kwargs, Branches of is None and isinstance, etc.