How do I use logging handlers in Python?

How do I use logging handlers in Python?

In Python, logging handlers are used to configure how log messages are processed and where they are sent. You can use built-in handlers like StreamHandler, FileHandler, and more.

Can you give me an example of using a FileHandler?

Sure! Here's a simple example:

import logging

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

# Create a FileHandler
file_handler = logging.FileHandler('my_log.log')
file_handler.setLevel(logging.INFO)

# Create a formatter and set it for the handler
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
file_handler.setFormatter(formatter)

# Add the handler to the logger
logger.addHandler(file_handler)

# Log a message
logger.info('This is an info message')

What other handlers are available?

Other than FileHandler, you can use StreamHandler for console output, SMTPHandler for sending logs via email, and RotatingFileHandler for log rotation.

How do I configure multiple handlers?

You can add multiple handlers to the same logger. Just create each handler and add them using logger.addHandler(handler). Each handler can have its own level and formatter.