웹 파이선 프로그래밍

PythonWebServer 수업을 듣는중에 localhost로 접속하는 코드를 설명해주셨는데,포트번호가 8000일 때, http://localhost:8000 에 접속해도 http_response 가 출력되지 않습니다.포트번호를 바꾸어도 포트번호를 바꿔도 http_response 가 출력되지 않습니다. 왜그런지 알려주실 수 있으실까요? 감사합니다. 

결과창에는 이렇게 출력됩니다.

Serving HTTP on port 9000 ...
GET / HTTP/1.1
Host: localhost:9000
Connection: keep-alive
sec-ch-ua: " Not A;Brand";v="99", "Chromium";v="102", "Google Chrome";v="102"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate, br
Accept-Language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
Cookie: username-localhost-8945="2|1:0|10:1652695894|23:username-localhost-8945|44:MGMwZDM1MDYxNDgyNGRmMzk3NjI2NDMyYmZlNjI5NTU=|795cb5b5b48200b9cbf9fe4dc637e36575e89383ad4ef02a987b483e0a5575d4"; username-localhost-8817="2|1:0|10:1652857633|23:username-localhost-8817|44:NmNkNGY3MDllZTJlNDg2NWE4OGE5MDRkOGI2YTUzZDM=|fdecadda4ae1169ab18ee59793edbe8