Hi Fred, If windows users associate .py with the py.exe launcher, (and .pyw with the pyw.exe launcher), then it will default to python 3 (highest version installed, 64 bit if available), and will honour a `#! python3` shebang, (with a number of formats accepted). It should also be reasonably easy to teach the users to type: py scriptname rather than python or python3 scriptname (less to type rather than more).
The link for details is https://docs.python.org/3/using/windows.html#python-launcher-for-windows and there are details on installation further up the page. Hope that this answers your problem. Steve Barnes -----Original Message----- From: Frédéric De Jaeger <fdejae...@novaquark.com> Sent: 23 March 2020 18:00 To: python-ideas@python.org Subject: [Python-ideas] About python3 on windows Hi all, There is a recurring problem in my company where we use python in various places (python3). We do cross platform development windows/linux and our python scripts need to run everywhere. Some scripts are launched manually in a terminal. Others are launched via windows' gui interface. Others are launched through our build process (cmake based, but also manual Makefile) And others are launched via bash scripts. And possible several other scenario I've forgot. On windows, most users use Cygwin to do their terminal based business (`git`, `cmake`, ...). The issue is: There is no reliable way to launch a python script. The command: python myscript.py launches python3 on windows and python2 on 99% of the unix market. The command python3 myscript.py does not run on windows with the latest python distribution I've played with (sorry if it has been fixed recently, this whole mail becomes pointless). Human can learn which command to run, it's ok. But for all other invocations context, this becomes very annoying. Surprisingly, `cmake` is the more friendly, since `FindPython` will returns a python3 first. At the moment, we have scripts that run under version 2 when run by a linux user and version 3 on windows. This works by pure luck. If the standard python distro would just provide a simple `python3` binary/alias, then all the stars would align perfectly. the basic shebang #! /usr/bin/env python3 would work everywhere by default, without requiring any tweaking (install a python3 alias on windows, or ask linux users to change the default `python` symlink) I'm sure, I'm far from being the first user complaining about that. Sorry if the request has been been made numerous time before. What it the status on this point ? Thanks a lot. Fred _______________________________________________ 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/PTYLAO7YXM4UH3CEI3BRBRALM3AL4HJQ/ Code of Conduct: http://python.org/psf/codeofconduct/ _______________________________________________ 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/YAGPL3NO7J4MQYGGFT6R2JWFYESWIFJJ/ Code of Conduct: http://python.org/psf/codeofconduct/
