python 小记（2） Logging模块

日志模块

 logging.basicConfig() 对日志的输出格式及方式做相关配置

日志例子：

import os
import os.path
import socket
import logging
import logging.handlers
logging.basicConfig()


def singleton(cls, *args, **kw):
    instances = {}

    def _singleton():
        if cls not in instances:
            instances[cls] = cls(*args, **kw)
        return instances[cls]
    return _singleton


@singleton
class JFMlogging(object):
    logger = logging.getLogger()

    def __init__(self):
        host_name = socket.gethostname()
        # ip = socket.gethostbyname(host_name)
        logging_msg_format = '[%(asctime)s] [%(levelname)s] [' + host_name + '][%(module)s.py - line:%(lineno)d] %(message)s'
        logging_date_format = '%Y-%m-%d %H:%M:%S'
        log_path = 'logs'  # 日志存放目录
        logging.basicConfig(level=logging.INFO, format=logging_msg_format, datefmt=logging_date_format)
        self.logger.setLevel(logging.INFO)

        if not os.path.exists(log_path):
            os.mkdir(log_path)
        log_file = os.path.join(log_path, 'system.log')

        fileHandler = logging.handlers.TimedRotatingFileHandler(log_file, 'midnight', 1)
        fileHandler.setFormatter(logging.Formatter(logging_msg_format))
        self.logger.addHandler(fileHandler)

    def getloger(self):
        return self.logger

logger = JFMlogging().getloger()
class test(object):
    def __init__(self):
        logger.info(u"测试数据")


if __name__ == '__main__':
    T = test()

参考内容：
https://my.oschina.net/leejun2005/blog/126713
https://www.cnblogs.com/anpengapple/p/5048123.html