Support calling dict() with positional arguments and keyword arguments or **kwargs - #1391
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Still cases like this are broken: class D(Dict[S, T], Generic[T, S]): ... Also, we don't catch all invalid uses of keyword arguments with dict subclasses.
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Also inherit special signature of
dict. Some special cases (that are likely very rare) are not handled well. I'll create a separate issue for those. The implementation is a hack but it mostly does the right thing and is fairly simple, and a clean solution would be much more complicated (for example, a plugin system or constraint based type inference system for function signatures), so I think this is okay for now.