On 28 Sep 2021, at 10:54, Antoine Pitrou <antoine@python.org> wrote:
On Tue, 28 Sep 2021 10:51:53 +0200 Ronald Oussoren via Python-Dev <python-dev@python.org> wrote:
On 28 Sep 2021, at 10:05, Antoine Pitrou <antoine@python.org> wrote:
On Mon, 27 Sep 2021 10:51:43 -0600 Eric Snow <ericsnowcurrently@gmail.com <mailto:ericsnowcurrently@gmail.com>> wrote:
We've frozen most of the stdlib modules imported during "python -c pass" [1][2], to make startup a bit faster. Import of those modules is controlled by "-X frozen_modules=[on|off]". Currently it defaults to "off" but we'd like to default to "on". The blocker is the impact on contributors. I expect many will make changes to a stdlib module and then puzzle over why those changes aren't getting used. That's an annoyance we can avoid, which is the point of this thread.
Possible solutions:
1. always default to "on" (the annoyance for contributors isn't big enough?) 2. default to "on" if it's a PGO build (and "off" otherwise) 3. default to "on" unless running from the source tree
Thoughts?
My vote is on #3 to minimize contributor annoyance and eventual puzzlement.
I agree, but… Most CPython tests are run while running from the source tree, that means that there will have to be testrunner configurations that run with “-X frozen_modules=on”.
Well, multiplying CI configurations is the price of adding options in general.
Of course. I mentioned it because the proposal is to add a new option that’s enabled after installation, and basically not when the testsuite is run. That’s not a problem, we could just enable the option in most CI jobs. Ronald
Regards
Antoine.
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