auto save

diy1.py

+i = 3
 username = "宋"      
 userpassword = "123456" 
 while True:
+    if i>0:
         name=input("请输入用户名:")
         password=input("请输入密码:")
+        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("密码输入有误") 
+    else:
+         print("你的账号已被锁定")
+         exit()
 print("欢迎来到贝尔编程")
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