gistfile1.py

# Including logging
log_file = who_args.pop('log_file', None)
if log_file is not None:
    if log_file.lower() == 'stdout':
        log_stream = sys.stdout
    elif log_file.lower() == 'stderr':
        log_stream = sys.stderr
    else:
        log_stream = open(log_file, 'wb')
    who_args['log_stream'] = log_stream

log_level = who_args.get('log_level', None)
if log_level is None:
    log_level = logging.INFO
else:
    log_level = _LEVELS[log_level.lower()]
who_args['log_level'] = log_level