学习python语言-----logging模块（转 记录与学习）

import logging  
logging.basicConfig(level=logging.DEBUG,  
                    format=‘%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s‘,  
                    datefmt=‘%a, %d %b %Y %H:%M:%S‘,  
                    filename=‘/tmp/test.log‘,  #若无此项，则默认输出于控制台
                    filemode=‘w‘)  #w用于刷新纪录，a用于增加记录，默认为a
  
#5个日志记录级别
logging.debug(‘debug message‘)  
logging.info(‘info message‘)  
logging.warning(‘warning message‘)  
logging.error(‘error message‘)  
logging.critical(‘critical message‘)

import logging

logger = logging.getLogger()
# 创建一个handler，用于写入日志文件
fh = logging.FileHandler(‘test.log‘)

# 再创建一个handler，用于输出到控制台
ch = logging.StreamHandler()

formatter = logging.Formatter(‘%(asctime)s - %(name)s - %(levelname)s - %(message)s‘)

fh.setFormatter(formatter)
ch.setFormatter(formatter)

logger.addHandler(fh) #logger对象可以添加多个fh和ch对象
logger.addHandler(ch)

logger.debug(‘logger debug message‘)
logger.info(‘logger info message‘)
logger.warning(‘logger warning message‘)
logger.error(‘logger error message‘)
logger.critical(‘logger critical message‘)

import os
import time
import logging
from config import settings


def get_logger(card_num, struct_time):

    if struct_time.tm_mday < 23:
        file_name = "%s_%s_%d" %(struct_time.tm_year, struct_time.tm_mon, 22)
    else:
        file_name = "%s_%s_%d" %(struct_time.tm_year, struct_time.tm_mon+1, 22)

    file_handler = logging.FileHandler(
        os.path.join(settings.USER_DIR_FOLDER, card_num, ‘record‘, file_name),
        encoding=‘utf-8‘
    )
    fmt = logging.Formatter(fmt="%(asctime)s :  %(message)s")
    file_handler.setFormatter(fmt)

    logger1 = logging.Logger(‘user_logger‘, level=logging.INFO)
    logger1.addHandler(file_handler)
    return logger1