python logging

Loguru

loguru

Delgan • Updated 2025 May 14 11:16

from loguru import logger

# Set up logging with custom formatting and level
logger.add("file.log", format="{time} {level} {message}", level="INFO")

# Log messages with different severity
logger.debug("This is a debug message")
logger.info("Training started")
logger.warning("Data preprocessing might take longer")
logger.error("Model training failed")
logger.exception("Exception occurred during testing")

logger.getLogger().setLevel(logger.WARNING)

logging - Logging facility for Python - Python 3.8.6rc1 documentation

Source code: Lib/logging/__init__.py This module defines functions and classes which implement a flexible event logging system for applications and libraries. The key benefit of having the logging API provided by a standard library module is that all Python modules can participate in logging, so your application log can include your own messages integrated with messages from third-party modules.

https://docs.python.org/ko/3/library/logging.html

In python, why use logging instead of print?

For simple debugging in a complex project is there a reason to use the python logger instead of print? What about other use-cases? Is there an accepted best use-case for each (especially when you...

https://stackoverflow.com/questions/6918493/in-python-why-use-logging-instead-of-print