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Python Object-Oriented Python Advanced Objects Subclassing Built-ins

Why is it unsafe to use super() with immutable types?

Kenneth mentions this about the 3 minute mark in the Subclassing Built-ins video.

1 Answer

David Lin
David Lin
35,864 Points

I think it has to do with the fact that using super() can mutate any internal state of the object, which of course is undesirable when your sub-classed object is presumed to be immutable.

Rui Xu
Rui Xu
11,245 Points

Hi David, would you please elaborate on "using super() can mutate any internal state of the object", I still don't quite get it. Thanks in advance.