Python1 练习
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#!/usr/bin/env python
#codingutf-8
count = 0
while count < 3:
username = raw_input("USERNAME:")
password = raw_input("PASSWORD:")
if username == "user" and password == "123":
print "welcome!!!"
break
elif username != "user" and password != "123":
print "username or password wrong!!!"
elif username == "user" and password != "123":
print "password is wrong!!!"
elif username != "user" and password == "123":
print "username or password is wrong!!!"
count +=1
if count == 3:
print "go away ang don‘t back!!!"
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