On Sun, Nov 22, 2020 at 1:55 PM Samuel Colvin <samcol...@gmail.com> wrote:
> More generally, I think runtime type checking was never the intention for > type hints, in fact I think Guido specifically said somewhere that runtime > type checking was not an intended use case (am I right?). However > pydantic and a few other projects seem to me to have been very successful > in using them for that anyway. I'd love it if python's developers could be > a bit more supportive to runtime type inspection in future. > I've always held that it must be *possible* to introspect annotations at runtime, and I believe that we occasionally had to tweak static typing features to support this. But that's not the same as supporting isinstance() where the second argument is a generic type or some other special form like Any or Callable[.....]. That said, if you have a specific wish, please start a new thread on typing-sig and we'll discuss it. -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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