def output(self, key, obj):

        value = get_value(key if self.attribute is None else self.attribute, obj)

        if value is None:
            return self.default

        return self.format(value)
Build and install required dependencies
dataset/ETHPy150Open flask-restful/flask-restful/flask_restful/fields.py/Raw.output--crossover with--dataset/ETHPy150Open circuits/circuits/fabfile/__init__.py/build