importloggingimportmultiprocessinglogger=multiprocessing.get_logger()logger.setLevel(logging.DEBUG)handler=logging.StreamHandler()handler.setFormatter(logging.Formatter('[%(levelname)s] [%(processName)s] [%(filename)s:%(lineno)d:%(funcName)s] %(message)s'))logger.addHandler(handler)defadd1(x):returnx+1logger.info("print info")logger.debug("print debug")withmultiprocessing.Pool(3)asp:result=p.map(add1,range(10))

$ python test_logger.py[INFO] [MainProcess] [test_logger.py:16:<module>] print info[DEBUG] [MainProcess] [test_logger.py:17:<module>] print debug[DEBUG] [MainProcess] [util.py:50:debug] created semlock with handle 140232166834176[DEBUG] [MainProcess] [util.py:50:debug] created semlock with handle 140232166830080[DEBUG] [MainProcess] [util.py:50:debug] created semlock with handle 140232157552640[DEBUG] [MainProcess] [util.py:50:debug] created semlock with handle 140232157548544[DEBUG] [MainProcess] [util.py:50:debug] created semlock with handle 140232157544448[DEBUG] [MainProcess] [util.py:50:debug] created semlock with handle 140232157540352[DEBUG] [MainProcess] [util.py:50:debug] added worker[DEBUG] [MainProcess] [util.py:50:debug] added worker[INFO] [ForkPoolWorker-1] [util.py:54:info] child process callingself.run()[INFO] [ForkPoolWorker-2] [util.py:54:info] child process callingself.run()[DEBUG] [MainProcess] [util.py:50:debug] added worker[INFO] [ForkPoolWorker-3] [util.py:54:info] child process callingself.run()...

$ python test_logger.py[INFO] [MainProcess] [test_logger.py:16:<module>] print info[DEBUG] [MainProcess] [test_logger.py:17:<module>] print debug[DEBUG] [MainProcess] [synchronize.py:67:__init__] created semlock with handle 139963328901120[DEBUG] [MainProcess] [synchronize.py:67:__init__] created semlock with handle 139963328897024[DEBUG] [MainProcess] [synchronize.py:67:__init__] created semlock with handle 139963319619584[DEBUG] [MainProcess] [synchronize.py:67:__init__] created semlock with handle 139963319615488[DEBUG] [MainProcess] [synchronize.py:67:__init__] created semlock with handle 139963319611392[DEBUG] [MainProcess] [synchronize.py:67:__init__] created semlock with handle 139963319607296[DEBUG] [MainProcess] [pool.py:331:_repopulate_pool_static] added worker[INFO] [ForkPoolWorker-1] [process.py:312:_bootstrap] child process calling self.run()[DEBUG] [MainProcess] [pool.py:331:_repopulate_pool_static] added worker[INFO] [ForkPoolWorker-2] [process.py:312:_bootstrap] child process calling self.run()[DEBUG] [MainProcess] [pool.py:331:_repopulate_pool_static] added worker[INFO] [ForkPoolWorker-3] [process.py:312:_bootstrap] child process calling self.run()[DEBUG] [MainProcess] [pool.py:655:terminate] terminating pool[DEBUG] [MainProcess] [pool.py:684:_terminate_pool] finalizing pool[DEBUG] [MainProcess] [pool.py:694:_terminate_pool] helping task handler/workers to finish[DEBUG] [MainProcess] [pool.py:525:_handle_workers] worker handler exiting[DEBUG] [MainProcess] [pool.py:674:_help_stuff_finish] removing tasks from inqueue until task handler finished[DEBUG] [MainProcess] [pool.py:557:_handle_tasks] task handler got sentinel[DEBUG] [MainProcess] [pool.py:561:_handle_tasks] task handler sending sentinel to result handler[DEBUG] [MainProcess] [pool.py:565:_handle_tasks] task handler sending sentinel to workers[DEBUG] [MainProcess] [pool.py:590:_handle_results] result handler got sentinel[DEBUG] [ForkPoolWorker-2] [pool.py:120:worker] worker got sentinel -- exiting[DEBUG] [MainProcess] [pool.py:618:_handle_results] ensuring that outqueue is not full[DEBUG] [ForkPoolWorker-2] [pool.py:140:worker] worker exiting after 3 tasks...