chatwork/apps.py
from django.apps import AppConfig
from django.conf import settings
class ChatworkConfig(AppConfig):
name = 'chatwork'
DEFAULT_BACKEND = 'chatwork.backends.dummy.DummyBackend' \
if settings.DEBUG else 'chatwork.backends.http.UrllibBackend'
BACKEND = getattr(settings, 'CHATWORK_API_BACKEND', DEFAULT_BACKEND)