[Python-Dev] PEP 379 Python launcher for Windows - behaviour for #!/usr/bin/env python line is wrong

Brian Curtin brian at python.org
Sat May 4 04:18:40 CEST 2013

On Fri, May 3, 2013 at 3:23 PM, Paul Moore <p.f.moore at gmail.com> wrote:
> I would propose that the behaviour of the launcher on Windows should be
> changed when it encounters specifically the hashbang line #!/usr/bin/env
> python. In that case, it should search PATH for a copy of python.exe, and if
> it finds one, use that. If there is no python.exe on PATH, it should fall
> back to the same version of Python as would have been used if the line were
> #!/usr/bin/python.
> This will mean that scripts written with #!/usr/bin/env python will behave
> the same on Unix and Windows in the presence of activated virtualenvs.
> Would people be happy with this change? If so I will open an issue on
> bugs.python.org. I can look at producing a patch, as well.

Sounds reasonable to me.

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