save project

diy2.py

@@ -9,6 +9,7 @@ while True:
     if name != username:
     if name != username:
         print("用户名不存在")
         print("用户名不存在")
         continue
         continue
-    if password != usepassword:
-        print("密码有误")    
+    if password != userpassword:
+        print("密码有误") 
+    print("用户和密码都错误!")       
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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