def main():
usr = input("username:"******"password:"******"登录失败！")
else:
print("登陆成功！进入后台管理界面..")
def main():
user = raw_input('username:'******'password:'******'用户名或者密码错误'
else:
print '登陆后台管理界面'
def main():
user = input('username:'******'password:'******'user check result:',result)
if not result:
print('Wrong username or password')
else:
print('login success')
