assert isinstance(self.file, str)
self.data = read_logfile(file, 'a_tokenof the common part ---
read_logfile()函数(外部函数)中的令牌也随类而变化' instead of 'a_token'
# here o
CREATE TABLE public.devices id integer NOT NULL DEFAULT nextval('devices_id_seq'::regclass), ...some other columns...,)
CREATEINDEX IF NOT EXISTS idx_devices_lower_token ON devices (lo