http://docs.python.org/2/howto/logging-cookbook.htmlhttp://docs.python.org/2/library/logging.handlers.html#module-logging.handlers http://www.red-dove.com/python_logging.html handler: google 'python logger multiple handler'http://stackoverflow.com/questions/2031394/python-logging-over-multiple-files submodule도 main과 같은 logger 사용: google 'python global logger' http://stackoverflow.com/questions/7..