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Author hauntsaninja
Recipients BTaskaya, Zac Hatfield-Dodds, corona10, gvanrossum, hauntsaninja, kj, levkivskyi, serhiy.storchaka
Date 2020-11-30.02:25:13
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Marked as misclassified Yes
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You're right that Callable[[P], int] is invalid, so a flat representation isn't currently ambiguous. But a flat representation would foist the responsibility for checking that to all users of `__args__`. If your code isn't ParamSpec aware, your failures will probably be less obvious or even silent.

The flat representation trades off a) implementation complexity with b) usability / aesthetics, c) future proof-ness. I'm not morally opposed to such a tradeoff / am happy to defer to people with more experience in making such tradeoffs.
Date User Action Args
2020-11-30 02:25:13hauntsaninjasetrecipients: + hauntsaninja, gvanrossum, serhiy.storchaka, levkivskyi, corona10, Zac Hatfield-Dodds, BTaskaya, kj
2020-11-30 02:25:13hauntsaninjasetmessageid: <>
2020-11-30 02:25:13hauntsaninjalinkissue42195 messages
2020-11-30 02:25:13hauntsaninjacreate