Update request.py

Author: NewUserHa

Lib/urllib/request.py

@@ -1838,8 +1838,8 @@ def getproxies_environment():
                 proxies[proxy_name] = value
     # CVE-2016-1000110 - If we are running as CGI script, forget HTTP_PROXY
     # (non-all-lowercase) as it may be set from the web server by a "Proxy:"
-    # header from the client
-    # If "proxy" is lowercase, it will still be used thanks to the next block
+    # header from the client.
+    # The below check it and only accepts the lowercase "_proxy"
     if 'REQUEST_METHOD' in os.environ:
         proxies.pop('http', None)
     for name, value, proxy_name in environment: