How to limit the fie size in logging.

[maiya]

Hi All,

How to limit the file size and should start to write into a new file in logging. Much appreciated your help/suggestions on this. Thanks a lot.

Regards,
Maiya

[Gribouillis]

Use a RotatingFileHandler, here an example copied and pasted from the famous Mouse vs Python blog.

import logging
import time

from logging.handlers import RotatingFileHandler

#----------------------------------------------------------------------
def create_rotating_log(path):
    """
    Creates a rotating log
    """
    logger = logging.getLogger("Rotating Log")
    logger.setLevel(logging.INFO)
    
    # add a rotating handler
    handler = RotatingFileHandler(path, maxBytes=20,
                                  backupCount=5)
    logger.addHandler(handler)
    
    for i in range(10):
        logger.info("This is test log line %s" % i)
        time.sleep(1.5)
        
#----------------------------------------------------------------------
if __name__ == "__main__":
    log_file = "test.log"
    create_rotating_log(log_file)

[maiya]

logging_file   = 'test.log'
logging_format = '%(asctime)s: [%(levelname)s] [{}] %(message)s'.format(self.action)
        
logging.basicConfig(
    filename = '{}'.format(logging_file),
    format   = '{}'.format(logging_format),
    level    = logging.DEBUG
)

This is my code, here I need to limit the file size and rotate the file. How to do the same sir. Much appreciated for your help on this. Thank you.

Regards,
Maiya