renderers.py 文件源码

def render(self, data, accepted_media_type=None, renderer_context=None):
        if hasattr(data, 'items'):
            for key, value in data.items():
                assert not isinstance(value, dict), (
                    "Test data contained a dictionary value for key '%s', "
                    "but multipart uploads do not support nested data. "
                    "You may want to consider using format='json' in this "
                    "test case." % key
                )
        return encode_multipart(self.BOUNDARY, data)