Python - log to both console and file

logger.py

import logging

# Global Configuration Variables
log_file = 'output.log'

# Configure Logging
log = logging.getLogger('logger')
log.setLevel(logging.DEBUG)
formatter = logging.Formatter('%(message)s')

# Configure Logging to file with file handler = 'fh'
fh = logging.FileHandler(log_file, mode='w', encoding='utf-8')
fh.setLevel(logging.DEBUG)
fh.setFormatter(formatter)
log.addHandler(fh)

# Configure Logging to console with console handler = 'ch'
ch = logging.StreamHandler()
ch.setLevel(logging.INFO)
ch.setFormatter(formatter)
log.addHandler(ch)

# Usage
log.debug('This is a debug log message')
log.info('This is an info log message')
log.warning('This is a warning log message')
log.error('This is an error log message')
log.critical('This is an error log message')