save project

diy2.py

@@ -6,9 +6,9 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if name!=userpassword:
-        print("用户名错误")
-    if password !=username:
+    elif name!=username:
         print("用户名错误")
+    else:
+        print("密码错误")
 print("欢迎来到贝尔编程")
     
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