pystdlib

import logging

logging.basicConfig(filename="app.log",
                    format="%(asctime)s - %(name)s - %(levelname)s -%(module)s:  %(message)s",
                    datefmt="%Y-%m-%d %H:%M:%S %p",
                    level=10)   # level=ERROR, INFO, WARN

# 记录日志 : 只有【当前写等级】大于【日志等级】时，日志文件才被记录。

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

logging.log(LEVEL, msg)
    logging.log(10, 'info')

CRITICAL = 50
FATAL = CRITICAL
ERROR = 40
WARNING = 30
WARN = WARNING
INFO = 20
DEBUG = 10
NOTSET = 0