Python logbook 模块，FileHandler() 实例源码

def setup_logbook(logfile, logfile_kwargs=None):
  """Return a basic `logbook` setup which logs to `stderr` and to file."""

  if logfile_kwargs is None:
    logfile_kwargs = {}

  logfile_kwargs.setdefault('level', 'DEBUG')
  logfile_kwargs.setdefault('mode', 'w')
  logfile_kwargs.setdefault('bubble', True)
  logfile_kwargs.setdefault('format_string',
      ('--------------------------------------------------------------------------\n'
       '[{record.time} {record.level_name:<8s} {record.channel:>10s}]'
       ' {record.filename:s}:{record.lineno:d}\n{record.message:s}'))

  logbook_setup = logbook.NestedSetup([
    logbook.NullHandler(),
    logbook.more.ColorizedStderrHandler(level='INFO', bubble=False,
      format_string='[{record.level_name:<8s} {record.channel:s}] {record.message:s}'),
    logbook.FileHandler(logfile, **logfile_kwargs),
  ])

  return logbook_setup

def setup_logger(test, path='test.log'):
    test.log_handler = FileHandler(path)
    test.log_handler.push_application()

def logging_context(path=None, level=None):
    from logbook import StderrHandler, FileHandler
    from logbook.compat import redirected_logging
    with StderrHandler(level=level or 'INFO').applicationbound():
        if path:
            if not os.path.isdir(os.path.dirname(path)):
                os.makedirs(os.path.dirname(path))
            with FileHandler(path, bubble=True).applicationbound():
                with redirected_logging():
                    yield
        else:
            with redirected_logging():
                yield

def run(self):

        log = Logger("GAF Bot")
        log.handlers.append(StreamHandler(sys.stdout, bubble=True))
        log.handlers.append(FileHandler("bot/logs/last-run.log", bubble=True, mode="w"))
        self.logger = log
        self.logger.notice("Logging started")
        self.logger.notice("Bot process started")

        with open("bot/config/defaults/default.guildconfig.json") as f:
            self.default_guild_config = json.load(f)
            self.logger.debug("Loaded default guild config")

        self.logger.debug("Connecting to DB")
        self.db_conn = sqlite3.connect("bot/config/guild_configs.db")
        self.logger.notice("DB Connection Established")
        self.db_cursor = self.db_conn.cursor()
        self.db_cursor.execute("SELECT count(*) FROM sqlite_master WHERE type='table' AND name='serverSettings'")
        exists = self.db_cursor.fetchone()
        if not exists[0]:
            self.logger.error("No table found in DB! Creating new one now")
            self.db_cursor.execute('''CREATE TABLE serverSettings (id bigint, settings long)''')
            self.logger.debug("Table created")

        self.load_extension("bot.modules.core")
        self.logger.notice("Loaded core module")

        self.logger.notice("Loading other modules")
        # This bar and the time.sleep() stuff is entirely useless
        # Like completely
        # Don't do this
        # It just looks cool and that makes me happy but really this is terrible
        # and a complete waste of time
        time.sleep(0.5)
        for cog in tqdm.tqdm(self.config["modules"].keys(),
                             desc="Loading modules"
                             ):
            self.load_extension(f"bot.modules.{cog.lower()}")
            time.sleep(0.2)
        time.sleep(0.5)
        self.logger.debug("Completed loading modules")

        self.logger.notice("Logging into Discord")
        super().run(self.config["token"], reconnect=True)