[docs] [issue10977] Concrete object C API considered harmful to subclasses of builtin types

Antoine Pitrou report at bugs.python.org
Fri Oct 25 18:18:05 CEST 2013

Antoine Pitrou added the comment:

> The problem we're trying to solve is CPython *silently* breaking subclass
> invariants, which is what the concrete APIs currently do.

To be clear: the problem is with CPython calling the concrete APIs when
it shouldn't, rather than with the concrete APIs not behaving properly.


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