test_logging.py 文件源码

def setUp(self):
        """Setup the default logging stream to an internal StringIO instance,
        so that we can examine log output as we want."""
        logger_dict = logging.getLogger().manager.loggerDict
        logging._acquireLock()
        try:
            self.saved_handlers = logging._handlers.copy()
            self.saved_handler_list = logging._handlerList[:]
            self.saved_loggers = logger_dict.copy()
            self.saved_name_to_level = logging._nameToLevel.copy()
            self.saved_level_to_name = logging._levelToName.copy()
        finally:
            logging._releaseLock()

        # Set two unused loggers: one non-ASCII and one Unicode.
        # This is to test correct operation when sorting existing
        # loggers in the configuration code. See issue 8201.
        logging.getLogger("\xab\xd7\xbb")
        logging.getLogger(u"\u013f\u00d6\u0047")

        self.root_logger = logging.getLogger("")
        self.original_logging_level = self.root_logger.getEffectiveLevel()

        self.stream = cStringIO.StringIO()
        self.root_logger.setLevel(logging.DEBUG)
        self.root_hdlr = logging.StreamHandler(self.stream)
        self.root_formatter = logging.Formatter(self.log_format)
        self.root_hdlr.setFormatter(self.root_formatter)
        self.root_logger.addHandler(self.root_hdlr)