capturing system exit status

[James]

Hi folks,

in a program I'm writing I have several commands I pass to the unix OS
underneath the code.

I want to perform error checking to make sure that the OS commands' exit
gracefully, but I'm not seeing a simple python module to do this. The
closest I can see is system(), as detailed here:
http://www.python.org/doc/2.1.3/lib/os-process.html, but I can't formulate a
way to use it.

What I want is a simple if statement such that:

if ExitStatusIsBad:
  sys.exit()
else:
  go on to next code chunk



James
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