The use case for -P still uses environment variables like PYTHONWARNINGS or PYTHONUTF8. That's why -I (isolated) cannot be used.
If there is an use case for a ._pth file importing the site module, maybe a different option can be added, no? Adding -P doesn't prevent that. But it seems like use cases are different enough to justify two options, no? Victor On Tue, Apr 26, 2022 at 11:52 PM Victor Stinner <vstin...@python.org> wrote: > The only purpose of proposed -P option is to "not add sys.path[0]". > There are use cases which only need that. > > Victor > > On Tue, Apr 26, 2022 at 8:37 PM Steve Dower <steve.do...@python.org> wrote: > > > > On 4/26/2022 10:46 AM, Victor Stinner wrote: > > > I propose adding a -P option to Python command line interface to "not > > > add sys.path[0]": > > > https://github.com/python/cpython/pull/31542 > > > > > > See the documentation in the PR for the exact behavior of this option. > > > I prefer to add an environment variable, only pass the option > > > explicitly on the command line. > > > > Another viable option might be to add an option to imply "import site", > > which would work together with -I to: > > * ignore environment variables (-E/-I) > > * omit implicit CWD imports (-I) > > * still process .pth files (-?) > > * still include site-packages and user site-packages in sys.path (-?) > > > > It seems likely that the proposed -P would almost always be used with > > -E, since if you can't control CWD then you presumably can't control > > environment variables either. > > > > The existing ._pth functionality starts by implying -I, and allows > > "import site" in the file to explicitly include site. A command-line > > option matching this behaviour would be consistent. There's also already > > configuration in our structures for import site, so there'd be no need > > to add new fields to public APIs for the option. > > > > The biggest issue I see is that the obvious command line options for > > "import site" are already used to imply "do not import site". But then, > > -P isn't obvious either. Maybe an -X option would suffice? > > > > Cheers, > > Steve > > > > > -- > Night gathers, and now my watch begins. It shall not end until my death. -- Night gathers, and now my watch begins. It shall not end until my death. _______________________________________________ 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/RHRRPR2QM6VKN36YGKWNGHE4UQWJXEZC/ Code of Conduct: http://python.org/psf/codeofconduct/
