code: def send_request(self, req):
          
          handlers = []
          if self.password_handler:
              handlers.append(self.password_handler)
          if self.ssl_verifier:
              handlers.append(self.ssl_verifier)
          opener = build_opener(*handlers)
          return opener.open(req)
docs: Send a standard library :class:`Request` to PyPI and return its
          response.
  
          :param req: The request to send.
          :return: The HTTP response from PyPI (a standard library HTTPResponse).