Python logging 模块，__dict__() 实例源码

def add_filehandler(logger,style="default",flevel='DEBUG',
                   filename=None,filemode='w'):
    name = ""
    #-- define formats
    if style=='default':
        format  = '%(asctime)s %(name)-12s %(levelname)-7s %(message)s'
        datefmt = '%a, %d %b %Y %H:%M'
    elif style=='grandpa':
        format  = '# %(levelname)-7s %(message)s'
        datefmt = '%a, %d %b %Y %H:%M'
    elif style=='minimal':
        format = ''
        datefmt = '%a, %d %b %Y %H:%M'
    flevel = logging.__dict__[flevel.upper()]
    logging.basicConfig(level=flevel,
                        format=format,datefmt=datefmt,
                        filename=filename,filemode=filemode)
    fh = logging.FileHandler(filename)
    fh.setLevel(flevel)
    formatter = logging.Formatter(fmt=format,datefmt=datefmt)
    fh.setFormatter(formatter)
    logging.getLogger(name).addHandler(fh)
    logging.getLogger(name).handlers[-1].level = flevel
    return logging.getLogger(name)

def get_logger(obj, log_to_file, log_to_stdout):
    """Get logger for given object.

    Removes all previously assigned handlers from the logger.

    Parameters
    ----------
    obj : Unknown
        Some object

    log_to_file: optional, boolean or string (default: False)
        Log results to given file, it will be located in the $BL_LOG_PATH

    log_to_stdout: optional, boolean (default: False)
        Log to standard output

    Returns
    -------
    logger : Logger
        Logger object
    """
    logger = logging.getLogger(type(obj).__name__)
    logger.handlers = []  # Remove all handlers
    logger.setLevel(logging.DEBUG)
    if log_to_file:
        bl_log_path = os.environ.get("BL_LOG_PATH", ".")
        log_file_name = "%s/%s" % (bl_log_path, log_to_file)
        handler = logging.FileHandler(log_file_name)
        handler.setLevel(logging.DEBUG)
        logger.addHandler(handler)
    if log_to_stdout:
        handler = logging.StreamHandler()
        handler.setLevel(logging.DEBUG)
        logger.addHandler(handler)
    if (not (log_to_file or log_to_stdout) and
            "NullHandler" in logging.__dict__):
        handler = logging.NullHandler()
        logger.addHandler(handler)
    return logger

def logger():
    getpid_patch = patch('logging.os.getpid', return_value=111)
    getpid_patch.start()
    time_patch = patch('logging.time.time', return_value=946725071.111111)
    time_patch.start()
    localzone_patch = patch('rfc5424logging.handler.get_localzone', return_value=timezone)
    localzone_patch.start()
    hostname_patch = patch('rfc5424logging.handler.socket.gethostname', return_value="testhostname")
    hostname_patch.start()
    connect_patch = patch('logging.handlers.socket.socket.connect', side_effect=connect_mock)
    connect_patch.start()
    sendall_patch = patch('logging.handlers.socket.socket.sendall', side_effect=connect_mock)
    sendall_patch.start()

    if '_levelNames' in logging.__dict__:
        # Python 2.7
        level_patch = patch.dict(logging._levelNames)
        level_patch.start()
    else:
        # Python 3.x
        level_patch1 = patch.dict(logging._levelToName)
        level_patch1.start()
        level_patch2 = patch.dict(logging._nameToLevel)
        level_patch2.start()

    logging.raiseExceptions = True
    logger = logging.getLogger()
    logger.setLevel(logging.DEBUG)
    yield logger

    getpid_patch.stop()
    time_patch.stop()
    localzone_patch.stop()
    hostname_patch.stop()
    connect_patch.stop()
    sendall_patch.stop()

    if '_levelNames' in logging.__dict__:
        # Python 2.7
        level_patch.stop()
    else:
        # Python 3.x
        level_patch1.stop()
        level_patch2.stop()

    Rfc5424SysLogAdapter._extra_levels_enabled = False