__init__.py 文件源码

def proxy_open(self, req, proxy, type):
    # This block is copied wholesale from Python2.6 urllib2.
    # It is idempotent, so the superclass method call executes as normal
    # if invoked.
    orig_type = req.get_type()
    proxy_type, user, password, hostport = self._parse_proxy(proxy)
    if proxy_type is None:
      proxy_type = orig_type
    if user and password:
      user_pass = "%s:%s" % (urllib2.unquote(user), urllib2.unquote(password))
      creds = base64.b64encode(user_pass).strip()
      # Later calls overwrite earlier calls for the same header
      req.add_header("Proxy-authorization", "Basic " + creds)
    hostport = urllib2.unquote(hostport)
    req.set_proxy(hostport, proxy_type)
    # This condition is the change
    if orig_type == "https":
      return None

    return urllib2.ProxyHandler.proxy_open(self, req, proxy, type)