오류 질문

Traceback (most recent call last):

File "c:\Users\khyun\python\middle\chapter07_01.py", line 57, in <module>

loop.run_until_complete(main())

File "C:\ProgramData\Anaconda3\lib\asyncio\base_events.py", line 647, in run_until_complete

return future.result()

File "c:\Users\khyun\python\middle\chapter07_01.py", line 48, in main

rst = await asyncio.gather(*futures)

File "c:\Users\khyun\python\middle\chapter07_01.py", line 30, in fetch

res = await loop.run_in_executor(executor, urlopen, url)

File "C:\ProgramData\Anaconda3\lib\concurrent\futures\thread.py", line 58, in run

result = self.fn(*self.args, **self.kwargs)

File "C:\ProgramData\Anaconda3\lib\urllib\request.py", line 214, in urlopen

return opener.open(url, data, timeout)

File "C:\ProgramData\Anaconda3\lib\urllib\request.py", line 523, in open

response = meth(req, response)

File "C:\ProgramData\Anaconda3\lib\urllib\request.py", line 632, in http_response

response = self.parent.error(

File "C:\ProgramData\Anaconda3\lib\urllib\request.py", line 561, in error

return self._call_chain(*args)

File "C:\ProgramData\Anaconda3\lib\urllib\request.py", line 494, in callchain

result = func(*args)

File "C:\ProgramData\Anaconda3\lib\urllib\request.py", line 641, in http_error_default

raise HTTPError(req.full_url, code, msg, hdrs, fp)

urllib.error.HTTPError: HTTP Error 403: Forbidden

똑같이 작성하고 결과 값이 나오다가 이런 식의 오류가 발생하는데 왜 그런걸까요? 네이버 쿠팡 티스토리만 하였습니다