Restart logging to a new file (Python)

Question

I'm using the following code to initialize logging in my application:

logger = logging.getLogger() logger.setLevel(logging.DEBUG)  # log to a file directory = '/reserved/DYPE/logfiles' now = datetime.now().strftime("%Y%m%d_%H%M%S") filename = os.path.join(directory, 'dype_%s.log' % now) file_handler = logging.FileHandler(filename) file_handler.setLevel(logging.DEBUG) formatter = logging.Formatter("%(asctime)s %(filename)s, %(lineno)d, %(funcName)s: %(message)s") file_handler.setFormatter(formatter) logger.addHandler(file_handler)  # log to the console console_handler = logging.StreamHandler() level = logging.INFO console_handler.setLevel(level) logger.addHandler(console_handler)  logging.debug('logging initialized') 

How can I close the current logging file and restart logging to a new file?

Note: I don't want to use RotatingFileHandler, because I want full control over all the filenames.

Answer 1

You can manually re-assign the handler if you want using the removeHandler and addHandler OR, you can access logger.handlers[index_of_handler_here].stream and replace the stream manually, but I'd recommend the former over the latter.

logger.handlers[0].stream.close() logger.removeHandler(logger.handlers[0])  file_handler = logging.FileHandler(filename) file_handler.setLevel(logging.DEBUG) formatter = logging.Formatter("%(asctime)s %(filename)s, %(lineno)d, %(funcName)s: %(message)s") file_handler.setFormatter(formatter) logger.addHandler(file_handler)