save project

diy1.py

@@ -5,5 +5,10 @@ while True:
     password = input("请输入用密码：")
     if name == username and password == userpassword
         print("登录成功！")
-    print("用户和密码输入错误，")
-print("欢迎")
+        break
+    if name!=username:
+    print("用户名错误，请重")
+    continue
+    if password!=userpassword:
+        print("密码错误！请重新输入")
+print("欢迎来到贝尔编程")