Python without wrapper script

[Jonathan Hartley]

On Dec 2, 4:12 pm, Ulrich Eckhardt <eckha... at satorlaser.com> wrote:
> eric.frederich wrote:
> > Is there a way to set up environment variables in python itself
> > without having a wrapper script.
>
> Yes, sure, you can set environment variables...
>
> > The wrapper script is now something like....
>
> > #!/bin/bash
>
> > export LD_LIBRARY_PATH="/some/thing/lib:$LD_LIBRARY_PATH"
> > export LD_LIBRARY_PATH="/another/thing/lib:$LD_LIBRARY_PATH"
>
> > export PATH="/some/thing/bin:$PATH"
> > export PATH="/another/thing/bin:$PATH"
>
> > python ./someScript.py
>
> ...but this won't work, I'm afraid.
>
> LD_LIBRARY_PATH is for the program loader / dynamic linker under Linux. This
> thing is what is invoked _before_ the program is started, any later
> modifications to the environment are ignored.
>
> Similarly PATH, which tells the shell (e.g. bash) where to find executables.
> If you need that to e.g. find 'python' itself, you're out of luck.
> Otherwise, I believe Python itself doesn't use PATH, so you could set it
> inside and any shells started from Python should pick it up.
>
> Uli
>
> --
> Sator Laser GmbH
> Geschäftsführer: Thorsten Föcking, Amtsgericht Hamburg HR B62 932


I have had success in modifying LD_LIBRARY_PATH from within my Python
code, to make sure that Python correctly loads DLL's from
subdirectories of my project. (I believe the Python ended up calling
CDll, or somesuch?)