auto save

diy2.py

@@ -8,7 +8,7 @@ while True:
         break
         break
     if name != username:
     if name != username:
         print('用户名输入错误')
         print('用户名输入错误')
-    else:
+    if password != username:
         print('密码输入错误')
         print('密码输入错误')
- 
+    print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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