Python3 urlopen在localhost上获得“504网关超时”（127.0.0.1）

Question

I got a 504 gateway timeout when use urlopen to open a site on localhost,while my browser can open it normally.

This site is on localhost and I can use my browser to prove that it works fine. I try to enable and disable system proxy settings but it has no effect.

from urllib.request import urlopen
urlopen("http://127.0.0.1") 
#raise urllib.error.HTTPError: HTTP Error 504: Gateway Time-out

Answer 1

First, add http:// before 127.0.0.1 . Second, give us more information on the server you are running, like, are you using proxy for localhost?

Answer 2

It seems like that urllib.request.urlopen in python3.7 don't understand subnet like 127.0.0.0/8 in no_proxy environment variable. Now I use localhost instead of 127.0.0.1 and it works.