auto save

diy2.py

+i=3
 username = "python"
 userpassword = "123456"
 while True:
+    if i>0: 
+        a=str(i) 
+        print("还有"+a+"次机会")  
         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
@@ -12,4 +17,6 @@ while True:
                 continue
             if password != userpassword:
                 print("用户名错误!请重新输入")
+    else:
+        print("你的账号已锁定")
 print("欢迎来到贝尔编程!")
\ No newline at end of file