Using doctest and executing a process
Cliff Wells
logiplexsoftware at earthlink.net
Mon Mar 11 17:48:19 EST 2002
On 11 Mar 2002 14:49:55 -0800
Douglas Garstang wrote:
> def tester3():
> """
> >>> import os
> >>> os.system ('/bin/ls')
> example.py example.pyc tester.py
> 0
> """
[snip]
> WHY? It runs fine interactively. It also knows to expect the right
> stuff. It just SEEMS to think its only getting the return status code
> of 0. Where did the other output from the external program go? I also
> tried using os.spawnv instead of os.system and I got the same results.
os.system returns the exit status of the program (0 in this case). The
directory listing went to stdout. Try:
import os
ls = os.popen("/bin/ls", 'r').read()
which will capture stdout into the variable ls.
--
Cliff Wells, Software Engineer
Logiplex Corporation (www.logiplex.net)
(503) 978-6726 x308 (800) 735-0555 x308
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