python 日誌管理，可通過引入logging包，實現日誌管理

一、配置檔案

• 建立一個配置檔案，如logging.conf

[loggers]
keys=root,console,file

[logger_root]
level=DEBUG
handlers=rootHandler
formatter=rootFormatter

[logger_console]
level=DEBUG
handlers=consoleHandler
formatter=consoleFormatter
qualname=console

[logger_file]
level=DEBUG
handlers=fileHandler
formatter=fileFormatter
qualname=file

[handlers]
keys=rootHandler,consoleHandler,fileHandler

[handler_rootHandler]
class=StreamHandler
level=DEBUG
formatter=rootFormatter
args=(sys.stdout,)

[handler_consoleHandler]
class=StreamHandler
level=DEBUG
formatter=consoleFormatter
args=(sys.stdout,)

[handler_fileHandler]
class=FileHandler
level=DEBUG
formatter=fileFormatter
args=("./log.log","a")

[formatters]
keys=rootFormatter,consoleFormatter,fileFormatter

[formatter_rootFormatter]
format=[%(asctime)s][%(filename)s][line:%(lineno)d][%(levelname)s] %(message)s
datefmt=%a, %d %b %Y %H:%M:%S

[formatter_consoleFormatter]
format=[%(asctime)s][%(filename)s][line:%(lineno)d][%(levelname)s] %(message)s
datefmt=%a, %d %b %Y %H:%M:%S

[formatter_fileFormatter]
format=[%(asctime)s][%(filename)s][line:%(lineno)d][%(levelname)s] %(message)s
datefmt=%a, %d %b %Y %H:%M:%S
 

• 呼叫log即可

• import logging.config
  
  logging.config.fileConfig("./logging.conf")
  
  logger = logging.getLogger('file')
  logger.debug("debug message")
  logger.info("info message")
  logger.warn("warn message")
  logger.warning("warning message")
  logger.critical("critical message")

二、不用配置檔案，直接擼程式碼

import logging

from colorlog import ColoredFormatter


def create_console_formatter(formatter='%(log_color)s[%(asctime)s][%(filename)s][line:%(lineno)d][%(levelname)s] %(message)s'):
    return formatter


def create_file_formatter(formatter='%(log_color)s[%(asctime)s][%(filename)s][line:%(lineno)d][%(levelname)s] %(message)s'):
    return formatter

#color不同level，不同顏色
def color_formatter(formatter):
    return ColoredFormatter(formatter)


def create_console_handler(formatter=ColoredFormatter(create_console_formatter()), level=logging.DEBUG):
    console_handler = logging.StreamHandler()
    console_handler.setLevel(level)
    console_handler.setFormatter(formatter)
    return console_handler


def create_file_handler(formatter=ColoredFormatter(create_console_formatter()), level=logging.DEBUG,
                        log_file='./log.log', mode='a',encoding='UTF-8'):
    file_handler = logging.FileHandler(log_file, mode, encoding)
    file_handler.setLevel(level)
    file_handler.setFormatter(formatter)
    return file_handler


 

console_handler = create_console_handler()
file_handler = create_file_handler()
logger = logging.getLogger("console")
logger.setLevel(logging.DEBUG)
logger.addHandler(console_handler)
logger.addHandler(file_handler)

logger.debug("debug")
logger.info("info")
logger.warning("warning")
logger.error("error")
logger.critical("critical")