How to use the splitwise.error.SplitwiseError function in splitwise

if category:
            expense_data["category_id"] = category.getId()

        content = self.__makeRequest(
            Splitwise.CREATE_EXPENSE_URL, "POST", expense_data)
        content = json.loads(content)
        expense = None
        errors = None

        if 'expenses' in content:
            if len(content['expenses']) > 0:
                expense = Expense(content["expenses"][0])

        if 'errors' in content:
            if len(content['errors']) != 0:
                errors = SplitwiseError(content['errors'])

        return expense, errors

if "members" in group_info:
            group_members = group.getMembers()
            del group_info["members"]
            Splitwise.setUserArray(group_members, group_info)

        content = self.__makeRequest(
            Splitwise.CREATE_GROUP_URL, "POST", group_info)
        content = json.loads(content)
        group_detail = None
        errors = None
        if "group" in content:
            group_detail = Group(content["group"])
            if "errors" in content["group"]:
                if len(content["group"]['errors']) != 0:
                    errors = SplitwiseError(content["group"]["errors"])

        return group_detail, errors

except SplitwiseNotAllowedException as e:
            e.setMessage("You are not allowed to access group with id %d" % group_id)
            raise
        except SplitwiseNotFoundException as e:
            e.setMessage("Group with id %d does not exist" % group_id)
            raise
        content = json.loads(content)
        errors = None
        success = False
        user = None
        if 'success' in content:
            success = content["success"]

        if 'errors' in content:
            if len(content['errors']) != 0:
                errors = SplitwiseError(content['errors'])

        if 'user' in content:
            if content['user'] is not None:
                user = Friend(content['user'])

        return success, user, errors

content = self.__makeRequest(
                Splitwise.DELETE_GROUP_URL+"/"+str(id), "POST")
        except SplitwiseNotAllowedException as e:
            e.setMessage("You are not allowed to access group with id %d" % id)
            raise
        except SplitwiseNotFoundException as e:
            e.setMessage("Group with id %d does not exist" % id)
            raise

        content = json.loads(content)
        if 'success' in content:
            success = content["success"]

        if 'errors' in content:
            if len(content['errors']) != 0:
                errors = SplitwiseError(content['errors'])

        return success, errors