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# -*- coding:gbk -*-
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import sys
reload(sys)
sys.setdefaultencoding('gbk')
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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 ......