save project

diy2.py

 username = "python"
 userpassword = "123456"
+i=3
 while True:
+    if i > 0:
         name = input("请输入用户名:")
         password = input("请输入密码:")
+        i = i - 1 
         if name == username and password == userpassword:
             print("登录成功!")
             break
@@ -11,4 +14,7 @@ while True:
             continue 
         if password != userpassword:
             print("输入密码错误")
+    else:
+        print("您的账号被锁定")
+        exit()              
 print("欢迎来到贝尔编程!")
\ No newline at end of file