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#!/usr/bin/python
#filename:sys.py
import sys
print "the command line arguments are:"
for i in sys.argv:
 print i
print ' The PYTHONPATH is', sys.path, ' '
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windyang@windyang-desktop:~/python$ python sys.py
the command line arguments are:
sys.py
 The PYTHONPATH is ['/home/windyang/python', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', '/usr/lib/python2.6/dist-packages', '/usr/lib/python2.6/dist-packages/PIL', '/usr/lib/python2.6/dist-packages/gst-0.10', '/var/lib/python-support/python2.6', '/usr/lib/python2.6/dist-packages/gtk-2.0', '/var/lib/python-support/python2.6/gtk-2.0', '/usr/local/lib/python2.6/dist-packages'] 
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1. ²âÊÔÒ³ÃæÊÇ·ñ¿É·ÃÎʵģ»
1.1 HTTP request status = 200, Ò³ÃæÏÂÔØÕýÈ·
from urllib import urlopen
# set up
url = None
# test
url = urlopen('http://www.baidu.com')
assert url.getcode() == 200
# ......
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