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diy2.py

@@ -2,12 +2,14 @@ username = "python"
 userpassword = "123456"
 i=3
 while True:
+    if
     name = input("请输入用户名:")
     if name!= username:
         print("用户名错误!")
         i-=1
         continue
     password = input("请输入密码:")
+    
     if name == username and password == userpassword:
         print("登录成功!")
         break