logging的使用python3_python2 logging

#以时间命名输出日志

def init_logging():
t = str(time.strftime("%Y%m%d_%H%M", time.localtime()))
filename = 'log_%s.txt' % t
logging.basicConfig(level=logging.DEBUG,
                    filename=filename,
                    ​filemode='w',
                    format='%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s')

#实现日志按大小分割，

def init_log():
    handler = logging.handlers.RotatingFileHandler('log/test1.log', maxBytes=1 * 1024 * 1024,
                                                   backupCount=3)  # 按1M大小分割，共保留10个文件
    formatter = logging.Formatter('%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s')
    handler.setFormatter(formatter)
    my_logger = logging.getLogger('')
    my_logger.setLevel(logging.DEBUG)
    my_logger.addHandler(handler)

两种初始化的方法打印时候都是logging.info（）

init_log()  #先初始化
logging.error("456")
logging.info("你好")