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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Subscripted generic classes should not have independent class variables","articleBody":"Currently we have\r\n```python\r\nclass A(Generic[T]):\r\n    x = None\r\n\r\nA[int].x = 1\r\nA[str].x = 'a'\r\n\r\nprint(A[int].x) # prints 1\r\nprint(A[int]().x) # prints None, since type is erased on instantiation\r\n```\r\n\r\n@JukkaL argues and I agree with him, that this looks wrong. Conceptually, there should be only one runtime class. I think we can implement this without loosing the current runtime generic information by tweaking descriptor ``__dict__`` of ``GenericMeta``, so that all assignments and look-ups on subscripted class objects like ``A[int]`` will be transferred to the original class object ``A``.\r\n\r\n@gvanrossum What do you think?","author":{"url":"https://github.com/ilevkivskyi","@type":"Person","name":"ilevkivskyi"},"datePublished":"2017-02-22T14:05:51.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":13},"url":"https://github.com/392/typing/issues/392"}