save project

diy1.py

@@ -7,4 +7,9 @@ while True:
     password=input("请输入密码")
     if name==username and password == userpassword:
         print("登陆成功")
-        break
\ No newline at end of file
+        break
+    if name != username:
+        print("用户名错误")
+        continue
+    if password != userpassword:
+        print("密码错误")
\ No newline at end of file