How do I use logging effectively in Python?

Using logging effectively in Python is essential for tracking events that happen during the execution of a program. The logging module in Python allows you to track, store, and display log messages, which can be critical for debugging and monitoring applications in production.

To get started with logging in Python, you need to import the logging module and configure it according to your needs. You can set the logging level, format the log messages, and specify where to output the logs (such as to a file or console).

Here's a basic example of how to use logging in Python:

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

This example demonstrates logging at different levels: DEBUG, INFO, WARNING, ERROR, and CRITICAL. Each log message will include the timestamp and the severity level.


logging Python logging debug messages error handling logging module monitoring applications

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