save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-while True:
+i = 3
+if i<0:
+    while True:
         name = input("请输入用户名:")
         name = input("请输入用户名:")
         password = input("请输入密码:")
         password = input("请输入密码:")
         if name == username and password == userpassword:
         if name == username and password == userpassword:
@@ -9,6 +11,11 @@ while True:
         else:
         else:
             if name != username:
             if name != username:
                 print("用户名错误!请重新输入")
                 print("用户名错误!请重新输入")
+                i-=1
             else:
             else:
                 if password == userpassword and password != userpassword:
                 if password == userpassword and password != userpassword:
                     print("密码错误!请重新输入")
                     print("密码错误!请重新输入")
+else:
+    print("您已被锁定")
+    exit()
+print("欢迎")
\ No newline at end of file