What is logging in programming

Logging.logger

import logging

logging.basicConfig(level=logging.WARNING)
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
  
logger.debug("some debugging...")
logger.error("some error...")

What is logging in programming

In computing, a log file is a file that records either events that 
occur in an operating system or other software runs, or messages between 
different users of a communication software. Logging is the act of 
keeping a log. ... Many operating systems, software frameworks and 
programs include a logging system.

LOGGING

import logging
LOG_FILENAME = 'example.log'
logging.basicConfig(filename=LOG_FILENAME,level=logging.DEBUG)

logging.debug('This message should go to the log file')

Source: davis.lbl.gov

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