On Tue, Sep 28, 2021 at 2:58 AM Eric Snow <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?
When exactly does the freezing happen? It's only a single data point, but when I'm tinkering with the stdlib itself, I'm always running from the source tree. So option 3 seems quite viable. ChrisA