Author gvanrossum
Recipients BTaskaya, Mark.Shannon, brandtbucher, brett.cannon, eric.snow, gvanrossum, indygreg, larry, lemburg, methane, miss-islington, nascheme, ncoghlan, rhettinger, ronaldoussoren, shihai1991, terry.reedy, vstinner
Date 2021-09-18.02:48:02
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Message-id <1631933283.1.0.317699230251.issue45020@roundup.psfhosted.org>
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> It would be nice to freeze argparse.py and its dependencies.  For command-line tools, startup time is important.

I quickly checked, and argparse has at least these dependencies:

argparse
re
enum
types
operator
functools
collections
keyword
reprlib
sre_compile
sre_parse
sre_constants
copyreg
gettext

Raymond, do you think we should also freeze the dependencies of runpy (so "python -m <module>" also starts faster)?

That would be

runpy
importlib
warnings
importlib.machinery
importlib.util
importlib._abc
contextlib
collections
keyword
operator
reprlib
functools
types

(I didn't dedupe this from the previous list.)

With all these modules frozen we'd probably run more risk of two things:

- frozen modules don't have a __file__ (and are missing a few other, less commonly used, attributes)
- editing a frozen module requires rebuilding, or running with -X frozen_modules=off
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Date User Action Args
2021-09-18 02:48:03gvanrossumsetrecipients: + gvanrossum, lemburg, brett.cannon, nascheme, rhettinger, terry.reedy, ronaldoussoren, ncoghlan, vstinner, larry, methane, Mark.Shannon, eric.snow, indygreg, miss-islington, brandtbucher, BTaskaya, shihai1991
2021-09-18 02:48:03gvanrossumsetmessageid: <1631933283.1.0.317699230251.issue45020@roundup.psfhosted.org>
2021-09-18 02:48:03gvanrossumlinkissue45020 messages
2021-09-18 02:48:02gvanrossumcreate