python登錄認證HTTP並打印頭信息

'''
Created on 2015-9-29

@author: Administrator
'''
#/usr/bin/env python
#Obtain Web Page Information With Authentication - Chapter 6 - dump_info.py
import sys, urllib2, getpass

class TermanalPassword(urllib2.HTTPPasswordMgr):
    def find_user_password(self, realm, authuri):
        retval = urllib2.HTTPPasswordMgr.find_user_password(self, realm, authuri)
        
        if retval[0] == None and retval[1] == None:
            #Did not find it in stored values; prompt user
            sys.stdout.write("Login required for %s at %s\n" % (realm, authuri))
            sys.stdout.write("Username: ")
            username = sys.stdin.readline().rstrip()
            password = getpass.getpass().rstrip()
        else:
            return retval
        
req = urllib2.Request(sys.argv[1])
opener = urllib2.build_opener(urllib2.HTTPBasicAuthHandler(TermanalPassword()))
fd = opener.open(req)
print "Retrieved", fd.geturl()
info = fd.info()
for key, value in info.items():
    print "%s = %s" % (key, value)