db.py 文件源码

def __init__(self, path=None):
        self.path = path or os.path.join(
                appdirs.user_data_dir(CONFIG_APPNAME), DB_NAME)
        db_dir = os.path.dirname(self.path)
        if not os.path.exists(db_dir):
            os.makedirs(db_dir)

        self.db = lmdb.open(self.path)
        # XXX removal when expired? Indexing by time?