How do I use the logging module in Python?

How do I use the logging module in Python?

The logging module in Python is used to track events that happen when your code runs. You can log messages at different severity levels like DEBUG, INFO, WARNING, ERROR, and CRITICAL.

Can you show me a simple example of how to set it up?

Sure! Here's a basic example:

import logging

# Set up basic configuration
logging.basicConfig(level=logging.DEBUG)

# Log messages
logging.debug('This is a debug message')
logging.info('This is an info message')
logging.warning('This is a warning message')
logging.error('This is an error message')
logging.critical('This is a critical message')

What if I want to log messages to a file instead of the console?

You can specify a filename in the basicConfig method. Here's how:

logging.basicConfig(filename='app.log', level=logging.DEBUG)

This will log all messages to 'app.log'.

Can I customize the log format?

Yes, you can customize the log format using the format parameter in basicConfig. For example:

logging.basicConfig(format='%(asctime)s - %(levelname)s - %(message)s', level=logging.DEBUG)