python 模拟web网页登录过程

#!/usr/bin/python

import sys, urllib2, getpass

class TerminalPassword(urllib2.HTTPPasswordMgr):

def find_user_password(self, realm, authurl):

retval = urllib2.HTTPPasswordMgr.find_user_password(self, realm, authurl)

if retval[0] == None and retval[1] == None:

sys.stdout.write("Login required for %s at %s\n" % (realm, authurl))

sys.stdout.write("Username: ")

username = sys.stdin.readline().rstrip()

password = getpass.getpass().rstrip()

return (username, password)

else:

return retval

req = urllib2.Request(sys.argv[1])

opener = urllib2.build_opener(urllib2.HTTPBasicAuthHandler(TerminalPassword()))

fd = opener.open(req)

print "Retrieved", fd.geturl()

info = fd.info()

for key, value in info.items():

print "%s = %s" % (key, value)