[issue41249] TypedDict inheritance doesn't work with get_type_hints and postponed evaluation of annotations across modules

[Guido van Rossum]

Guido van Rossum <guido at python.org> added the comment:

> What is/was the initial reason to not preserve the MRO for a TypedDict?

Hm, I can't say for sure. I believe it had something to do with TypedDict instances being instances of dict at runtime, but I can't actually reconstruct the reason. Maybe it's written up in PEP 589, but I suspect not (I skimmed and couldn't find it). If you ask on typing-sig maybe David Foster (who contributed the initial idea and implementation) remembers.

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