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pythonÄ£¿éÖ®ConfigParser: ÓÃpython½âÎöÅäÖÃÎļþ

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from urllib import urlopen
# set up
url = None
# test
url = urlopen('http://www.baidu.com')
assert url.getcode() == 200
# ......

Python modules : os, subprocess and commands

1. What’s the difference between all of the os.popen() methods?
popen2 doesn't capture standard error, popen3 does capture standard
error and gives a unique file handle for it. Finally, popen4 captures
standard error but includes it in the same file object as standard
output.
os.popen()&n ......
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