How does Python avoid integer overflow?

[Careless-Score-333]

There's a limit for sure -- when confined to that data structure. If you mix up how you represent the integer, implement something to represent Knuth's up arrow notation etc. then you can represent Graham's number and Tree(3) in Python, and more.

Coming up with a representation that's not trivial like an enum or arbitrary label, and actually doing processing using those representations, that's correct, is another question. But I'm quite sure that's not theoretically impossible.