On Nov 30, 6:52 am, Grimsqueaker <grimsqueake...@gmail.com> wrote: > > So would I be correct in saying that Filters apply only the the object > they are attached to and have no effect on how messages are propagated > through thelogginghierarchy? If this is the case my next question > would be: How can I affect whether or not a message is propagated > further up the tree? >
You are correct about how Filters work. To prevent propagation, use the propagate attribute, documented here: http://docs.python.org/library/logging.html#logger-objects Most times, you don't need to use this. For example, if you want events in the A hierarchy to go to one place and events in the B hierarchy to go to another place (e.g. two different log files), you just attach different handlers (e.g. two different FileHandlers) to loggers A and B. If you want a combined log as well, add an appropriate handler to the root logger. I find that things usually work OK if I just determine what handlers I need and attach them to the appropriate loggers, setting the levels on handlers and loggers appropriately. If I need filtering logic for a logger or handler which is more involved than just an integer threshold (which happens less often), I use Filters. Even less often, if I need to block events from a part of the logger hierarchy from bubbling upwards, then I use the propagate attribute. Regards, Vinay Sajip -- http://mail.python.org/mailman/listinfo/python-list
