Demonstrates different LogRecord attributes (formatters)

basic.py

"""Demonstrates different LogRecord attributes (formatters).
 https://docs.python.org/3/library/logging.html#logrecord-attributes
"""

import logging

# Notes
# -----
# pathname: this is relative!
# created: time in seconds since the epoch as a float
# name: this is the only place that uses arg to logging.getLogger()

FORMAT = """\
LOG:
    asctime: %(asctime)s
    created: %(created)f
    filename: %(filename)s
    funcName: %(funcName)s
    levelname: %(levelname)s
    levelno: %(levelno)s
    lineno: %(lineno)d
    message: %(message)s
    module: %(module)s
    msec: %(msecs)d
    name: %(name)s
    pathname: %(pathname)s
    process: %(process)d
    processName: %(processName)s
    relativeCreated: %(relativeCreated)d
    thread: %(thread)d
    threadName: %(threadName)s
-------------
"""

logging.basicConfig(format=FORMAT)

logger = logging.getLogger(__name__)  # or, try changing this to a string
logger.setLevel(logging.DEBUG)


def main():
    # 'application' code
    logger.debug('debug message')
    logger.info('info message')
    logger.warn('warn message')
    logger.error('error message')
    logger.critical('critical message')


if __name__ == '__main__':
    import sys
    sys.exit(main())