[Python] Is there a method to check Generic Type on instancing time in pyhon?

I suppose how it can be check what type specified on Generic types in __init__ ?

On python 3.10, it could not be.

On first, I found this page: Instantiate a type that is a TypeVar

and make some utility for get __orig_class__.

And test on instancing time, there is no __orig_class__ attribute in that timing on self.

Then I searched again I found this issue page: https://github.com/python/typing/issues/658.

I recognized that any python might have this limit.

Is there any other way?

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