Message 390498 - Python tracker

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In-reply-to
Author	ethan.furman
Recipients	Carl Osterwisch, Gabi.Davar, John Florian, chary314, dabrahams, davide.rizzo, dlenski, eric.araujo, eric.smith, eryksun, ethan smith, ethan.furman, ev2geny, jaraco, jwilk, martin.panter, ncoghlan, njs, paul.moore, piotr.dobrogost, pitrou, r.david.murray, sbt, steve.dower, tim.golden, zach.ware
Date	2021年04月07日.23:43:48
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1617839029.37.0.392511732721.issue14243@roundup.psfhosted.org>

Content
I think the best solution, albeit slightly backwards incompatible, is to change NamedTemporaryFile such that if (and only if) it is being used as a context manager, the underlying file is not closed until the context manager ends. This should be the default behavior with no new flags. Since context managers are used for resource acquisition (`__enter__`) and cleanup (`__exit__`), having the resource disappear in the middle of the `with` block is counter-intuitive. Given that closing a file in the middle of its CM seems like a very odd thing to do (one could just leave the CM and the file would close), do we need a deprecation period or can we just make the change?

Content

I think the best solution, albeit slightly backwards incompatible, is to change NamedTemporaryFile such that if (and only if) it is being used as a context manager, the underlying file is not closed until the context manager ends. This should be the default behavior with no new flags.
Since context managers are used for resource acquisition (`__enter__`) and cleanup (`__exit__`), having the resource disappear in the middle of the `with` block is counter-intuitive.
Given that closing a file in the middle of its CM seems like a very odd thing to do (one could just leave the CM and the file would close), do we need a deprecation period or can we just make the change?

History
Date	User	Action	Args
2021年04月07日 23:43:49	ethan.furman	set	recipients: + ethan.furman, paul.moore, jaraco, ncoghlan, pitrou, eric.smith, tim.golden, jwilk, eric.araujo, r.david.murray, njs, dabrahams, davide.rizzo, sbt, Gabi.Davar, martin.panter, piotr.dobrogost, zach.ware, dlenski, eryksun, steve.dower, Carl Osterwisch, ethan smith, John Florian, ev2geny, chary314
2021年04月07日 23:43:49	ethan.furman	set	messageid: <1617839029.37.0.392511732721.issue14243@roundup.psfhosted.org>
2021年04月07日 23:43:49	ethan.furman	link	issue14243 messages
2021年04月07日 23:43:48	ethan.furman	create

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