I need to catch exceptions thrown by programs started by the os.system
function,
as indicated by a non-zero return code (e.g. the mount utility). For example,
if I get the following results in a bash shell:
$mount test
mount: can't find /home/marty/test in /etc/fstab or /etc/mtab
then I want to catch the same exception from the corresponding os.system()
call,
i.e. "os.system('mount test')", but it doesn't work as expected:
>>> import os, sys
>>> try: os.system('mount test')
... except: print 'error'
...
mount: can't find /home/marty/test in /etc/fstab or /etc/mtab
256
>>>
I get the same results with popon, popen2, popen3, etc. Apparently these also
work only when the program does not generate an exception. Is there any way to
catch the return code. or if not, a workaround?
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