python_logger.py

import logging
IS_LOGGING_INITIALIZED = False

class LogFile:
    filename = 'mylogging.log'
    maxBytes = (1000*5000)
    backupCount = 10
    format = '%(asctime)s %(message)s'
    datefmt = '%m/%d/%Y %I:%M:%S %p'

def createlogging():
    global IS_LOGGING_INITIALIZED
    if IS_LOGGING_INITIALIZED:
        return
    formatter = logging.Formatter(LogFile.format)
    rotatingHandler = handlers.RotatingFileHandler(
        LogFile.filename, maxBytes=LogFile.maxBytes, backupCount=LogFile.backupCount)
    rotatingHandler.setLevel(logging.INFO)
    rotatingHandler.setFormatter(formatter)
    streamHandler = logging.StreamHandler(sys.stdout)
    streamHandler.setFormatter(formatter)
    logging.basicConfig(
        level=logging.INFO,
        format=LogFile.format, datefmt=LogFile.datefmt,
        handlers=[
            rotatingHandler,
            streamHandler
        ])
    IS_LOGGING_INITIALIZED = True