grabbing return codes from os.system() call
grante at visi.com
Thu Mar 8 17:18:44 CET 2001
In article <%wFp6.9481$dL4.126404 at vixen.cso.uiuc.edu>, Damian Menscher wrote:
>How do I get the return code from an os.system call? I would
>have expected I could do something like
>echo do stuff
>and then in my python program I could do
>But it prints out 768. Not particularly useful, even after I
>recognize the trick of dividing by 256 (byte-swapping going on?
>No, because a return code of 768 reports as 0).
A return code of 0x0300 (768) means that the exit status was
0x03, and the signal number was 0x00.
>Given that my real return codes will be (possibly large)
They won't be larger than 255. At least not on any Unix system
I've ever heard of.
>this limitation will likely cause some serious problems down
>Even better would be a way of returning a string (the script I
>run can be something other than csh, but it has to be a
Take a look at the "commands" module. The function
commands.getstatusoutput("foobar") will return a tuple of exit
status, plus stdout and stderr strings. It's just a wrapper
around popen2 routines, so you could do the same thing
yourself. Last time I looked it was only available on Unix
Grant Edwards grante Yow! Bo Derek ruined
at my life!
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