Stephen Sanwo
Introduction to Logging in Python

Introduction to Logging in Python

Code Snippet

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Stephen Sanwo
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1 min read

This code snippet helps setup base logging for your applications in python.

  • Logging Format helps set the format of your logs
  • File name helps save the logs in a txt file. File format can be empty if you just want logs in the CLI
  • Level helps limit the logged information to the level of information you are interested in logging

There are various logging levels to be aware of

  • DEBUG: Detailed information, typically of interest only when diagnosing problems

  • INFO: Confirmation that things are working as expected

  • WARNING: An indication that something unexpected happened, or indicative of some problem in the near future (e.g. ‘disk space low’). The software is still working as expected

  • ERROR: Due to a more serious problem, the software has not been able to perform some function

  • CRITICAL: A serious error, indicating that the program itself may be unable to continue running

import logging

FILENAME = "filepath for your logging file.txt"
LOG_FORMAT = "%(levelname)s %(asctime)s %(message)s"
logging.basicConfig(filename=FILENAME,
                    level=logging.DEBUG,
                    format=LOG_FORMAT)

logger = logging.getLogger()


def logging_test():    
    logger.debug("Debug")
    logger.info("Info")
    logger.warning("Warning")
    logger.error("Error")
    logger.critical("Critical")
    return None
Python