Python Logging Module Experiment

main.py

import logging

# Create a logger
logger = logging.getLogger('mylogger')
logger.setLevel(logging.INFO)

# Create a log handler printing to sys.stdout
consoleWarning = logging.StreamHandler()
consoleWarning.setLevel(logging.WARNING)

# Create a log formatter upcasing messages
class UpcaseFormatter(logging.Formatter):
    def format(self, record):
        return record.levelname + ": " + record.msg.upper()

# Bind the formatter to the handler
# upcaseFormatter = UpcaseFormatter()  # no need to create a formatter instance in python3
consoleWarning.setFormatter(UpcaseFormatter())

# Finally bind to the logger
logger.addHandler(consoleWarning)

logger.debug("I just ran this line")
logger.info("foo() finished")
logger.warning("disk has %d left" % 15)
logger.error("error")
logger.critical("overheat")

loggerChild = logging.getLogger('mylogger.child')
loggerChild.setLevel(logging.DEBUG)
loggerChild.propagate = True

loggerChild.debug("Hello Papa")
loggerChild.info("Hello Papa!")
loggerChild.warning("Papa!")