logging means tracking events when a software runs we add logs to show an event occurred

there are several levels of logging depending on severity include;

LEVEL	when it is used
DEBUG	Provide detailed information when diagnosing
INFO	Confirmation that things worked well
WARNING	something unexpected happened that might affect you in future like low storage but software runs
ERROR	serious problem, causing some specific functionanlity in the program to halt
CRITICAL	more serious error, causing the entire program to crash totally

logging methods are named after levels of severity mentioned above including logging.debug(), logging.info(), logging.warning(), logging.error()

logging is a build-in module in python.

import logging
logging.warning("watch out!")
logging.info("I told you")

logging to file

import logging
logging.basicConfig(filename="my_log", level=logging.DEBUG,
                    format="%(asctime)s: %(levelname)s: %(message)s")

you can access logging functionality by creating a logger

import logging
logger = getLogger(__name__)   # creating a logger to access logging methods
logging.basicConfig(filename="my_log", level=logging.DEBUG,
                    format="%(asctime)s: %(levelname)s: %(message)s")
logger.debug("this message should appear on console")
logger.info("this message should appear on console")
logger.warning("even this message should appear on console")

logging

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sammy

sammy