1 # 用户登录(三次机会重试) 2 i =0 3 4 while i < 3: 5 user = raw_input("username:") 6 pwd = raw_input("password:") 7 if user == "alex" and pwd == "123": 8 print('YES') 9 break 10 else: 11 print('try again') 12 i += 1
1 # 用户登录(三次机会重试) 2 i =0 3 4 while i < 3: 5 user = raw_input("username:") 6 pwd = raw_input("password:") 7 if user == "alex" and pwd == "123": 8 print('YES') 9 break 10 else: 11 print('try again') 12 i += 1