Help with 'popen'
James Stroud
jstroud at mbi.ucla.edu
Mon Jan 22 00:59:08 EST 2007
stephen_b wrote:
> Can someone let me know why this won't work? Thanks.
>
>
>>>>from os import popen
>>>>popen('export asdfasdf=hello').read()
>
> ''
>
>>>>popen('echo $asdfasdf').read()
>
> '\n'
>
> Thanks.
>
> Stephen
>
Python starts a new shell for each command, so your environment variable
is lost. You probably want this, which makes the variable "permanent".
py> import os
py> os.environ['asdfasdf'] = 'hello'
py> os.popen('echo $asdfasdf').read()
'hello\n'
James
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