I am setting up handlers to log DEBUG and above to a rotating file and
ERROR and above to console. But if any of my code calls a logger
(e.g., logging.error("foo")) before I setup my handlers, the logging
system will create a default logger that *also* emits logs, which I
can't seem to get rid of. Is there a way I can suppress the creation
of this default logger, or remove it when I 'm setting up my handlers?
Thanks.
Sample code:
import sys, logging, logging.handlers
if len(sys.argv) > 1:
logging.warning("Logging before setting handlers adds unwanted default
logger")
logging.getLogger().setLevel(logging.DEBUG)
console = logging.StreamHandler()
console.setLevel(logging.ERROR)
console.setFormatter(logging.Formatter('%(levelname)-8s %(module)s:
%(message)s'))
logging.getLogger().addHandler(console)
filelog = logging.handlers.RotatingFileHandler("/tmp/logtest2.log")
filelog.setFormatter(logging.Formatter('%(asctime)s %(levelname)-8s
%(module)s: %(message)s'))
filelog.setLevel(logging.DEBUG) # NOP since default above is DEBUG, but
OK
logging.getLogger().addHandler(filelog)
logging.debug("TEST debug")
logging.warning("TEST warning")
logging.error("TEST error")
Sample runs, first without initial log call (good), then with one
showing the default log messages in the mix (bad); I'm showing the
console and tailing the logfile so they're mixed together but the
timestamp indicates the file logs:
[EMAIL PROTECTED]:/tmp<103> tail -f /tmp/logtest2.log &
[EMAIL PROTECTED]:/tmp<118> python /tmp/logtest2.py
2007-06-05 09:36:27,234 DEBUG logtest2: TEST debug
2007-06-05 09:36:27,234 WARNING logtest2: TEST warning
ERROR logtest2: TEST error
2007-06-05 09:36:27,239 ERROR logtest2: TEST error
[EMAIL PROTECTED]:/tmp<119> python /tmp/logtest2.py this gives ugly logger
WARNING:root:Logging before setting handlers adds unwanted default logger
DEBUG:root:TEST debug
2007-06-05 09:36:30,069 DEBUG logtest2: TEST debug
WARNING:root:TEST warning
2007-06-05 09:36:30,072 WARNING logtest2: TEST warning
ERROR:root:TEST error
ERROR logtest2: TEST error
2007-06-05 09:36:30,073 ERROR logtest2: TEST error
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