What Is Logger in Python

Python comes with a logging module in the standard library that provides a flexible framework for emitting log messages from Python programs. … The module provides a way for applications to configure different log handlers and a way of routing log messages to these handlers.

How do you write a logger in Python?

1. import logging logging. basicConfig(level=logging. …
2. DEBUG:root:This will get logged.
3. import logging logging. basicConfig(filename=’app.log’, filemode=’w’, format=’%(name)s – %(levelname)s – %(message)s’) logging. …
4. root – ERROR – This will get logged to a file.
5. ERROR:root:This is an error message.

Why should I use logging Python?

Logging is critical if you want to diagnose problems or understand what’s happening with your Python application. … Define what types of information you want to include in your logs. Configure how it looks when it’s emitted. Most importantly, set the destination for your logs.