# level: 设置日志级别，默认为logging.WARNING
# stream: 指定将日志的输出流，可以指定输出到sys.stderr,sys.stdout或者文件，默认输出到sys.stderr，当stream和filename同时指定时，stream被忽略
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="myapp.log",
filemode="w",
)
# define a new log level
console = logging.StreamHandler()
console.setLevel(logging.INFO)
formatter = logging.Formatter("%(name)-12s: %(levelname)-8s %(message)s")
console.setFormatter(formatter)
logging.getLogger("").addHandler(console)
logging.debug("This is debug message")
logging.info("This is info message")
logging.warning("This is warning message")
# log file split
Rthandler = RotatingFileHandler("myapp1.log", maxBytes=10 * 1024 * 1024, backupCount=5)
Rthandler.setLevel(logging.INFO)
formatter = logging.Formatter("%(name)-12s: %(levelname)-8s %(message)s")
Rthandler.setForamtter(formatter)
logging.getLogger("").addHandler(Rthandler)
