[Python-Dev] Adding Python scripts to PATHEXT on Windows

[Paul Moore]

On 28 July 2013 00:30, Steve Dower <Steve.Dower at microsoft.com> wrote:

> Another issue to consider is that the modification to PATHEXT can't be
> undone when Python is uninstalled, unless each installation adds another
> ".PY" and each uninstall removes only one (so my PATHEXT would look like
> ...;.PY;.PY;.PY;.PY;.PY;.PY;.PY;.PY;.PY;.PY). I haven't checked, but this
> could seriously hurt performance of anything that uses PATHEXT to search
> PATH for anything ending in this extension. I hope that cmd.exe and
> PowerShell check for duplicate extensions, but I wouldn't be betting any
> money that they do.
>

I used the same mechanism in msi.py (which is MSI functionality, I believe)
that is used to add Python's directory to PATH - this adds on install and
removes on ininstall. So it should work just as well as that does.

Paul
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