create new log file on logging?

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create new log file on logging? - korenron - Mar-21-2022

Hello,
I'm using logging and I have notice that the file is not clean after reboot (program start again)
what do I need to do in order to "clean" the log file ?

this is what I have :

import logging
logging.basicConfig(filename='/home/pi/logs/App1_Log.log', level=logging.INFO, format='%(asctime)s %(message)s')
.
.
.
.

logging.info('%s:%s',  Data)

Thanks ,

RE: create new log file on logging? - deanhystad - Mar-21-2022

mode = "w" in the config command.

RE: create new log file on logging? - korenron - Mar-21-2022

Thanks

can I also do the following (is this "legal"?)
check the size of the file , and if it's more then a wanted size - save\delete it and then start the logging in mode ='w' ?

RE: create new log file on logging? - deanhystad - Mar-21-2022

A log file is a file. Do whatever you want.

RE: create new log file on logging? - bowlofred - Mar-21-2022

You can add a handler of type RotatingFileHandler. Check the documentation and make sure you don't set either maxBytes or backupCount to 0. You could modify your earlier logging setup like so:

import logging
from logging.handlers import RotatingFileHandler
logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s %(message)s'),
    handlers=[RotatingFileHandler('/home/pi/logs/App1_log.log', maxBytes=1000000, backupCount=4),
    )

RE: create new log file on logging? - snippsat - Mar-21-2022

I would advice to use Loguru.
Usage is simpler and cleaner(no boilerplate),than the one in standard library.

from loguru import logger
import time
#logger.remove() # Only info to file
logger.add("file.log", rotation="2 day")

@logger.catch
def foo():
    return 1 / 0

foo()

RE: create new log file on logging? - korenron - Mar-22-2022

thank you both
I will try both ways

Thanks !