为什么Python日志创建了2个日志文件

Question

我有以下Python代码来记录活动

timestamp = datetime.datetime.fromtimestamp(time.time()).strftime('%Y_%m_%d_%H_%M_%S')
today = datetime.datetime.now().strftime('%Y_%m_%d')

log_file = os.path.join(os.path.dirname(os.getcwd()), 'logs', today, 'refresh_'+timestamp+'.log')

logging.basicConfig(level=logging.INFO,
                    filename=log_file,
                    format='%(asctime)s %(name).4s %(process)6d/%(threadName)s: %(levelname).4s %(message)s')

def func_1(args):
    if abc:
            logging.info('--- Refreshing ['+fn+'] completed ---')
        except:  
            logging.critical('--- Refreshing ['+fn+'] failed! ---')
    else:
        logging.critical('--- Retrieving ['+fn+'] data failed! Error:' + str(page.status_code) + ": " + account + ": " + password + '---')

    return;

def func_2(file_path):
    logging.info('Loaded all connecting metadata successfully')
    return;

if __name__ == '__main__':

    func_2(abc)

    pool = Pool(processes=threads)
    pool.map(func_1, abc)
    pool.close()
    pool.join()

    logging.info('--- Whole process completed ---')
    logging.shutdown()

问题是该进程创建了2个具有不同时间的日志文件（因为我在文件名中使用了时间戳到秒）。一个日志文件log_1记录了func_1中的所有活动，并首先生成了。另一个log_2已从代码末尾的Loaded all connecting metadata successfully和func_2记录--- Whole process completed ---;它最后生成了。

我怀疑这是因为有2个处理程序，每个处理程序在不同的时间生成。如何确保将所有活动记录到一个日志文件而不是2？