Message 404974 - Python tracker

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Author	gvanrossum
Recipients	gvanrossum, kj, levkivskyi, martinitus, rhettinger, serhiy.storchaka
Date	2021-10-25.15:42:42
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1635176562.17.0.580136629004.issue45438@roundup.psfhosted.org>
In-reply-to

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I really don't recall if we even seriously considered what isinstance(list[int], type) should return. PEP 585 doesn't mention it. I presume it falls out of the way it's being tested and the way list[int] passes most attribute requests on to the origin (i.e., to list). Given that this has returned True for two releases now I'm very reluctant to changing this now. So our best option is pursuing Serhiy's option 1, at least partially. The fix for the OP should be simple enough, right?

I really don't recall if we even seriously considered what isinstance(list[int], type) should return. PEP 585 doesn't mention it. I presume it falls out of the way it's being tested and the way list[int] passes most attribute requests on to the origin (i.e., to list).

Given that this has returned True for two releases now I'm very reluctant to changing this now. So our best option is pursuing Serhiy's option 1, at least partially. The fix for the OP should be simple enough, right?

History
Date	User	Action	Args
2021-10-25 15:42:42	gvanrossum	set	recipients: + gvanrossum, rhettinger, serhiy.storchaka, levkivskyi, kj, martinitus
2021-10-25 15:42:42	gvanrossum	set	messageid: <1635176562.17.0.580136629004.issue45438@roundup.psfhosted.org>
2021-10-25 15:42:42	gvanrossum	link	issue45438 messages
2021-10-25 15:42:42	gvanrossum	create