def __init__(self, db: Database = None,
path: PathGenerator = None,
session: Session = None,
auth: Auth = None):
self.db = MongoDB('weibo', primary_key='id') if db is None else db
self.path = StoreByUserName('./download') if path is None else path
self.session = Session(timeout=10, retry=5) \
if session is None else session
if auth is None:
auth = Auth()
self.token = auth.token.token
self.client = Client()
