output.py 文件源码

def __init__(self, filename=None, directory=None, suffix='.log',
                 program_name=None, formatter=formatter.TEXT_FORMATTER,
                 level=None, max_size_bytes=0, backup_count=0):
        """Rotating log file output.

        :param filename: The log file path to write to.
        If directory is also specified, both will be combined.
        :param directory: The log directory to write to.
        If no filename is specified, the program name and suffix will be used
        to contruct the full path relative to the directory.
        :param suffix: The log file name suffix.
        This will be only used if no filename has been provided.
        :param program_name: Program name. Autodetected by default.
        :param max_size_bytes: allow the file to rollover at a
        predetermined size.
        :param backup_count: the maximum number of files to rotate
        logging output between.
        """
        logpath = _get_log_file_path(filename, directory,
                                     program_name, suffix)
        handler = logging.handlers.RotatingFileHandler(
            logpath, maxBytes=max_size_bytes, backupCount=backup_count)
        super(RotatingFile, self).__init__(handler, formatter, level)