Example logging setup util func with Handlers and Filters

utils.py

# Basic tests
def setup_log(alog, level=logging.INFO, file_name=None, log_filter=None,
              str_formatter='[%(levelname)s] %(asctime)-15s [%(name)s %(funcName)s %(lineno)d] %(message)s'):
    """Core Util to setup log handler

    :param alog: a log instance
    :param level: (int) Level of logging debug
    :param file_name: (str, None) if None, stdout is used, str write to file
    :param log_filter: (LogFilter, None)
    :param str_formatter: (str) log formatting str
    """
    alog.setLevel(logging.DEBUG)
    if file_name is None:
        handler = logging.StreamHandler(sys.stdout)
    else:
        handler = logging.FileHandler(file_name)

    formatter = logging.Formatter(str_formatter)
    handler.setFormatter(formatter)
    handler.setLevel(level)

    if log_filter:
        handler.addFilter(log_filter)

    alog.addHandler(handler)

    return alog