[Tutor] Changing (Unix) environment for python shell/popen() commands

["Jörg Wölke"]

> Hey all.

Hello!
 
> I'm unfortunately stuck using python 1.5.2, primarily on Linux 
> currently, and have done the usual searching (on list, active state, 
> google), without luck.
> 
> I've got to shell out from my python code to execute a command, but 
> _must_ set the environment at the same time (or prior to execution).  I 
> say must, because in this case the obvious answer of modifying the 
> command to be called or wrapping it with a shell script to set the 
> environment won't work/isn't going to happen.
> 
> I saw some comments about setting os.environ[<some shell var>], but 
> didn't seem to be seeing this work in subsequent calls using popen2().

What is the error?

> Does anyone have a working piece of code setting some env variable 
> successfully prior to(or along with) calling popen2() (or friends).
> Also, is there any way to get the called programs return code via 
> popen() (again, under python 1.5.2)?
 

>>> os.environ['murx']="hello world"
>>> os.system("echo $murx")
>>> x=os.popen("echo $murx").readline()
>>> x
'hello world\n'
>>> os.system("man bash")

> I know this has been asked often enough, but once again, it seems I'm 
> left wanting for _good_ documentation under python (ie compared to man 
> pages, DevStudio Win32 docs, Linux info, Java docs, etc), including the 
> half dozen python books I own  (great for some things, but no reference 
> whatsoever to other things that I'd think would warrant some coverage)..
> 
> Thanks,
> 
> Scott
> _______________________________________________
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> http://mail.python.org/mailman/listinfo/tutor
> 

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