@Christopher Barker <python...@gmail.com> You nailed it! I've used the conda activate command many times. It should in theory be possible in Python
@Chris Angelico <ros...@gmail.com> Yes mere shell commands passing via Py does not work, maybe a file way with results in current shell as @M.-A. Lemburg <m...@egenix.com> points out, venv already generates the files. On windows it has an activate.bat Kind Regards, Abdur-Rahmaan Janhangeer about <https://compileralchemy.github.io/> | blog <https://www.pythonkitchen.com> github <https://github.com/Abdur-RahmaanJ> Mauritius On Mon, Jan 4, 2021 at 9:03 PM Christopher Barker <python...@gmail.com> wrote: > I know nothing of the details, but I think the goal is to have the same > command work (almost) everywhere, yes? > > That does not need to be a python script, however. In fact, it's nice if > activating an environment is as fast as possible so firing up Python to do > it is less than ideal. > > Anyway -- I'd encourage folks to look at conda -- it now provides a conda > command that can activate on multiple plaatfroms the same way: > > conda activate env_name > > I don't know how many different shells that works with, but it at least > hits the big few. > > "conda" used to be a python script but I'm pretty sure it's now some kind > of custom executable that re-directs the commands, and I'm sure is > different on different platforms. > > prior art and all that. > > -CHB > > > > > On Mon, Jan 4, 2021 at 8:34 AM M.-A. Lemburg <m...@egenix.com> wrote: > >> On 04.01.2021 15:45, Chris Angelico wrote: >> > On Tue, Jan 5, 2021 at 1:42 AM Abdur-Rahmaan Janhangeer >> > <arj.pyt...@gmail.com> wrote: >> >> >> >> Greetings list, >> >> >> >> put simply, >> >> >> >> be able to use >> >> >> >> $ python -m venv venv_name activate >> >> >> >> To activate an env instead of having each platform have a way of >> >> handling it >> >> >> > >> > Unfortunately, that wouldn't work. Activating a virtual environment >> > means setting some env vars in the current shell, and Python is >> > fundamentally unable to do that - it can only be done within the shell >> > itself (by sourcing a script). >> > >> > You can, of course, simply run the Python executable from that venv, >> > but activation is *by its nature* a shell feature, and will differ by >> > shell. >> >> Something that would work is using the ssh-agent approach to >> output shell commands which configure the environment: >> >> # For bash et al: >> `python3 -c "print('export TEST=1')"` >> >> A new command: >> >> `python3 -m venv activate myenv bash` >> >> could do the trick. >> >> Of course, venv itself could also create the necessary >> shell files in the bin/ dir. You'd then just need to >> run: >> >> source myenv/bin/activate.sh >> >> (this is how virtualenv does this) >> >> -- >> Marc-Andre Lemburg >> eGenix.com >> >> Professional Python Services directly from the Experts (#1, Jan 04 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-ideas mailing list -- python-ideas@python.org >> To unsubscribe send an email to python-ideas-le...@python.org >> https://mail.python.org/mailman3/lists/python-ideas.python.org/ >> Message archived at >> https://mail.python.org/archives/list/python-ideas@python.org/message/7MOIJHJFQVVRL7GW4HY6E3V5X2CGHQX6/ >> Code of Conduct: http://python.org/psf/codeofconduct/ >> > > > -- > Christopher Barker, PhD (Chris) > > Python Language Consulting > - Teaching > - Scientific Software Development > - Desktop GUI and Web Development > - wxPython, numpy, scipy, Cython > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/447QJQ5XMRFA6TRDZJFDDYB2K4PRA6E4/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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