def parse_json(self, req, name, field):
        """Pull a json value from the request."""
        try:
            json_data = webapp2_extras.json.decode(req.body)
        except __HOLE__:
            return core.missing
        return core.get_value(json_data, name, field, allow_many_nested=True)
dataset/ETHPy150Open sloria/webargs/webargs/webapp2parser.py/Webapp2Parser.parse_json