code: def ignore_proxy_host (self):
          
          if urllib.proxy_bypass(self.host):
              return True
          no_proxy = os.environ.get("no_proxy")
          if no_proxy:
              entries = [parse_host_port(x) for x in no_proxy.split(",")]
              for host, port in entries:
                  if host.lower() == self.host and port == self.port:
                      return True
          return False
docs: Check if self.host is in the $no_proxy ignore list.