subprocess with shared environment?

[Gabriel Genellina]

En Mon, 17 Nov 2008 21:27:09 -0200, rowen <rowen at u.washington.edu>  
escribió:

> I'd like to replace some shell scripts with Python, but one step of
> the script modifies my environment in a way that the subsequent steps
> require.
>
> A simple translation to a few lines of subprocess.call(...) fails
> because the first call modifies the environment, but the other lines
> don't see it.
>
> Is there a straightforward  way to do this (without having to resort
> to writing some of it as a shell script)?

The first subprocess modifies *its* environment and dies - the  
modification is not seen by the caller process. I don't know of any way to  
modify parent's environment.
You might "echo" the desired changes in the first subprocess, read them  
 from the parent process and modify the environment that will be passed to  
later subprocesses. Perhaps someone else provides a more straightforward  
solution...

-- 
Gabriel Genellina