save project

diy2.py

 username = "python"
 userpassword = "123456"
-while True:
+i = 1
+for i in range(4):
+    if i < 3:
+        i = i+1
         name = input("请输入用户名:")
         if name == username:
             password = input("请输入密码:")
             if userpassword == password:
                 print('登录成功')
+                print("欢迎来到贝尔编程!")
                 break
             else:
                 print('密码错误')
         else:
             print("用户名错误!请重新输入")
-print("欢迎来到贝尔编程!")
\ No newline at end of file
+    else:
+        print('你被锁定了')