sword wrote:
> Thanks for your reply. I tried to edit the source a bit, now the
> main.py looks like this:
> #main.py
> import logging
> from logging import Filter
> import a
> import b
>
> logging.basicConfig(level=logging.DEBUG)
> root = logging.getLogger()
> root.addFilter(Filter("GoneWithTheWind")) #so I suppose no log msg
> would pass this filter
>
> logger = logging.getLogger("main")
> logger.debug("main process")
> a.print_log()
> b.print_log()
>
> ####
> And It still prints out all the log msg. :(
Here's a little demo to explore how filtering works:
$ cat demo.py
import logging
class Filter(logging.Filter):
def filter(self, record):
print "applying filter", self.name
return True
logging.basicConfig()
loggers = [logging.getLogger(path) for path in ["", "a", "a.b"]]
for logger in loggers:
logger.addFilter(Filter("filter@" + logger.name))
[handler] = logging.getLogger().handlers
handler.addFilter(Filter("filter@handler"))
for logger in loggers:
logger.critical("whatever")
$ python demo.py
applying filter filter@root
applying filter filter@handler
CRITICAL:root:whatever
applying filter filter@a
applying filter filter@handler
CRITICAL:a:whatever
applying filter filter@a.b
applying filter filter@handler
CRITICAL:a.b:whatever
$
As you can infer from the output only the filter(s) of the original logger
and of the handler(s) are applied.
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