save project

diy.py

 username = "python"   
 username = "python"   
 userpassword = "123456"
 userpassword = "123456"
+i = 3 
 while True: 
 while True: 
+    i -= 1
+    if i >=0: 
         name = input("请输入用户名")
         name = input("请输入用户名")
         if name == username:
         if name == username:
             password = input("请输入密码")
             password = input("请输入密码")
@@ -11,4 +14,7 @@ while True:
                     print("密码错误!请重新输入")           
                     print("密码错误!请重新输入")           
         else:
         else:
             print("用户名错误!请重新输入")
             print("用户名错误!请重新输入")
+    else:
+        print("都说了密码错误!你咋那么强!")
+        exit()
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")
\ No newline at end of file