def configure(self, context):
        if context.named_expressions not in self.name:
            raise BadSpecError(u'Name {} not found in list of named expressions!'.format(self.name))
        self._context = context
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/userreports/expressions/specs.py/NamedExpressionSpec.configure/swapped operands of `not in`