On Tue, Apr 20, 2021 at 10:03 AM Mark Shannon <m...@hotpy.org> wrote:
> ... > PEP 544 supports structural typing, but to declare a structural type you > must inherit from Protocol. > That smells a lot like nominal typing to me. > Note that to implement a protocol you do not have to inherit from anything. You create a structural type that subclasses Protocol, but then any object that satisfies that protocol can be passed where that type is expected, without having to inherit anything, so I would argue that this really is structural typing. -- - eric casteleijn (he/him)
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