On 27.09.2021 18:51, Eric Snow 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?
#3 sounds like a good solution, but how would you detect "running from the source tree" ? This sounds like you need another stat call somewhere, which is what the frozen modules try to avoid. I'd like to suggest adding an environment variable to enable / disable the setting instead. This makes it easy to customize the behavior without introducing complicated logic. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Experts (#1, Sep 28 2021) >>> Python Projects, Coaching and Support ... https://www.egenix.com/ >>> Python Product Development ... https://consulting.egenix.com/ ________________________________________________________________________ ::: We implement business ideas - efficiently in both time and costs ::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 https://www.egenix.com/company/contact/ https://www.malemburg.com/ _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/FLFBNODDQOGFNKXOMFBQKTE5AQHLA7LS/ Code of Conduct: http://python.org/psf/codeofconduct/
