def _deserialize(self, value, attr, data):
        if not utils.is_collection(value):
            self.fail('invalid')

        result = []
        errors = {}
        for idx, each in enumerate(value):
            try:
                result.append(self.container.deserialize(each))
            except __HOLE__ as e:
                result.append(e.data)
                errors.update({idx: e.messages})

        if errors:
            raise ValidationError(errors, data=result)

        return result
dataset/ETHPy150Open marshmallow-code/marshmallow/marshmallow/fields.py/List._deserialize