I tried to use file to config my logger and I got a weird situation that each message is outputted twice... Here is my scenario: python: 2.6
file abc_logging.conf: [loggers] keys=root,abc [handlers] keys=consoleHandler [formatters] keys=detailFormatter [logger_root] level=DEBUG handlers=consoleHandler [logger_abc] level=DEBUG handlers=consoleHandler qualname=abc [handler_consoleHandler] class=StreamHandler level=DEBUG formatter=detailFormatter args=(sys.stdout,) [formatter_detailFormatter] format=%(asctime)-15s %(levelname)s: %(filename)s:%(lineno)s: %(message)s datefmt=%Y-%m-%d %H:%M:%S Then in my program, i config the file with this: SCRIPT_DIR = os.path.dirname(os.path.realpath(sys.argv[0])) logging.config.fileConfig(SCRIPT_DIR + os.path.sep + 'abc_logging.conf') LOG = logging.getLogger('abc') I tried to print out the logger handlers with this: print("*"*10) print("number of handlers: %s" % len(LOG.handlers)) print(LOG.handlers) LOG.debug(sql) But there is no suspicious behavior: ********** number of handlers: 1 [<logging.StreamHandler instance at 0xf23518>] 2012-02-19 12:21:56 DEBUG: abc.py:88: SELECT ... 2012-02-19 12:21:56 DEBUG: abc.py:88: SELECT ... -- http://mail.python.org/mailman/listinfo/python-list