pyramid_renderer_flask.py

import json

from pyramid.renderers import JSON


class FlaskRenderer(JSON):

    def __call__(self, info):
        def _render(value, system):
            request = system.get('request')
            if request is not None:
                response = request.response
                ct = response.content_type
                if ct == response.default_content_type:
                    response.content_type = 'application/json'
            default = self._make_default(request)
            # `value` = flask response
            return self.serializer(json.loads(value.data.decode('utf8')), default=default, **self.kw)

        return _render


config.add_renderer('flask', FlaskRenderer())