New submission from Fabian: If I get and configure a named logger in the main module and another module that is imported uses the root logging functions (e.g., logging.info("Hello World!")) somehow affects the configuration of the first (named) logger.
The file m1.py defines the logger "testlogger" and then imports the module m2.py. In m2.py the root logger is used through logging.info(...). This message apparantly doesn't appear anywhere. After the import in m1.py the previously defined logger is used through logger.info(...). This message appears (formatted) in the logfile: 2013-04-16 11:23:56,231 INFO Hello from __main__ and (unformatted) at stdout: INFO:testlogger:Hello from __main__ I did not expect this behavior, therefore I reported this bug. In my expectation the call to logging.info() should not affect the behavior of the named and configured logger. Main module (m1.py): import logging def setup_logging(): # made this a function to avoid cluttering the global namespace logger = logging.getLogger("testlogger") logger.setLevel(logging.DEBUG) formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s') handler = (logging.FileHandler("testlog.log"), logging.StreamHandler()) handler = handler[0] # 0 : write to logfile, 1 : write to stdout handler.setFormatter(formatter) logger.addHandler(handler) return logger logger = setup_logging() import m2 logger.info("Hello from %s", __name__) Other module (m2.py) import logging logging.info("Hello from %s", __name__) I observed this behavior with Python v2.7.3 ---------- components: IO messages: 187061 nosy: fmueller priority: normal severity: normal status: open title: root logging functions break logger configuration versions: Python 2.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue17749> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com