How can I rotate log files in Python?

How can I rotate log files in Python?

You can use the logging module in Python, specifically the RotatingFileHandler class, to rotate log files.

Can you show me a code example?

Sure! Here's a simple example:

import logging
from logging.handlers import RotatingFileHandler

# Create a logger
logger = logging.getLogger('my_logger')
logger.setLevel(logging.DEBUG)

# Create a rotating file handler
handler = RotatingFileHandler('my_log.log', maxBytes=2000, backupCount=5)
logger.addHandler(handler)

# Log some messages
for i in range(100):
    logger.debug(f'Debug message {i}')

What do maxBytes and backupCount do?

maxBytes specifies the maximum file size before rotation occurs, and backupCount determines how many backup files to keep.