http.py 文件源码

def _prepare_request(self, **kwargs):
        """Prepares a HTTP request.
        Args:
            kwargs (dict): keyword arguments for the authentication function
                (``_add_ecdsa_signature()`` or ``_add_basic_auth()``) and
                :py:class:`requests.Request` class.
        Raises:
            AssertionError: in case ``kwargs['path']`` doesn't start with ``/``.
        """

        kwargs.setdefault('headers', {})

        # Add appropriate authentication headers
        if isinstance(self.private_key, SigningKey):
            self._add_ecdsa_signature(kwargs)
        elif self.email and self.password:
            self._add_basic_auth(kwargs)

        # Generate URL from path
        path = kwargs.pop('path')
        assert path.startswith('/')
        kwargs['url'] = urljoin(self.api_url, path)

        return requests.Request(**kwargs).prepare()