change windows system path from cygwin python?

Fredrik Lundh fredrik at
Wed Dec 15 20:01:58 CET 2004

<gry at> wrote:

> I want to write some kind of install script for my python app that
> will add c:\cygwin\usr\bin to the system path.  I don't want
> to walk around to 50 PC's and twiddle through the GUI to:
> My Computer --> Control Panel --> System --> Advanced --> Environment
> How can a python, or even a .bat script modify the system PATH?
> It doesn't appear to be in the registry.

did you look under

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\Environment



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