save project

diy2.py

@@ -10,4 +10,6 @@ while True:
         print("用户名错误!请重新输入") 
     if password != userpassword  :
         print("密码错误!请重新输入")
+    if name != username and password != userpassword:
+        print("用户名和密码错误!请重新输入") 
 print("欢迎来到贝尔编程!")
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