def get(self, id):
     expense = Expense.get_by_id(id)
     if expense:
         return {'expense': expense.data}, HTTPStatus.OK
     else:
         return {
             'message': 'Expense with specify ID not found.'
         }, HTTPStatus.NOT_FOUND
 def delete(self, id):
     expense = Expense.get_by_id(id)
     if expense:
         expense.delete()
         return {
             'message': f'Expense with ID {id} has been deleted.'
         }, HTTPStatus.OK
     else:
         return {
             'message': 'Expense with specify ID not found.'
         }, HTTPStatus.NOT_FOUND