save project

diy1.py

@@ -6,9 +6,12 @@ while True:
     password=input("请输入密码")
     if name==username and password==userpassword:
         print("登录成功")
-        print("欢迎来到贝尔编程")
         break
-    print("密码错误，请重新尝试")
+    if name!=username:
+        print("用户名错误")
+    if password!=userpassword:
+        print("密码错误")
+print("欢迎来到贝尔编程")