爲什麼要寫日誌?
方便維護、方便調試代碼、項目上線後,發現錯誤能快速定位到錯誤代碼。
web_logging.py
# -*- coding:utf-8 -*-
# [logger]
# 默認日誌格式
DEFAULT_LOG_FMT = '%(asctime)s %(filename)s [line:%(lineno)d] %(levelname)s: %(message)s'
# 默認時間格式
DEFUALT_LOG_DATEFMT = '%Y-%m-%d %H:%M:%S'
# 輸出日誌路徑
import os
LOG_OUT_PATH = os.path.abspath('.') + '/logs/'
import sys
import logging
from time import strftime
class Logger(object):
def __init__(self):
self._logger = logging.getLogger()
self.DEFAULT_LOG_FILENAME = '{0}{1}.log'.format(LOG_OUT_PATH, strftime("%Y-%m-%d"))
self.formatter = logging.Formatter(fmt=DEFAULT_LOG_FMT, datefmt=DEFUALT_LOG_DATEFMT)
self._logger.addHandler(self._get_file_handler(self.DEFAULT_LOG_FILENAME))
self._logger.addHandler(self._get_console_handler())
self._logger.setLevel(logging.INFO) # 默認等級
def _get_file_handler(self, filename):
filehandler = logging.FileHandler(filename, encoding="utf-8")
filehandler.setFormatter(self.formatter)
return filehandler
def _get_console_handler(self):
console_handler = logging.StreamHandler(sys.stdout)
console_handler.setFormatter(self.formatter)
return console_handler
@property
def logger(self):
return self._logger
test.py
from web_logging import Logger
logging = Logger().logger
logging.info(u"{}:開始XXX操作".format(datetime.datetime.now()))