Simple question about logging module.

[Gabor Urban]

Hullo,

I have started to use Python's logging, and got a problem. I have created
some loggers and wrote some lines in the log. The problem is, that most of
the lines appear doubled in the log, and some lines do not appear at all.

Any ideas or comments are wellcome,

Gabor

Here is the code:

import sys
import logging

l = logging.getLogger('XmlTester')
handler = logging.StreamHandler(sys.stderr)
l.addHandler(handler)
formatter = logging.Formatter("%(name)s %(asctime)s %(filename)s %(lineno)d
%(levelname)s %(message)s")
handler.setFormatter(formatter)
la = logging.getLogger('XmlTester.XmlParser')
handler = logging.StreamHandler(sys.stderr)
la.addHandler(handler)
handler.setFormatter(formatter)
lb = logging.getLogger('XmlTester.TestExecutor')
handler = logging.StreamHandler(sys.stderr)
lb.addHandler(handler)
handler.setFormatter(formatter)
l.setLevel(logging.DEBUG)
la.setLevel(logging.DEBUG)
lb.setLevel(logging.DEBUG)
l.debug("Start")
la.debug("Start la")
lb.debug("This debug")
lb.info("This started.")
l.info("Info written")
l.warning("This is a warning")
l.error("Error occured")
test = "Info.pck"
la.info("Hi there!")
la.critical("No file named '%s'"%test)
l.critical("End of all")


Here is the output:
XmlTester.XmlParser 2007-07-31 10:34:12,303 plogtest.py 21 DEBUG Start la
XmlTester.XmlParser 2007-07-31 10:34:12,303 plogtest.py 21 DEBUG Start la
XmlTester.TestExecutor 2007-07-31 10:34:12,319 plogtest.py 22 DEBUG This
debug
XmlTester.TestExecutor 2007-07-31 10:34:12,319 plogtest.py 22 DEBUG This
debug
XmlTester.TestExecutor 2007-07-31 10:34:12,319 plogtest.py 23 INFO This
started.
XmlTester.TestExecutor 2007-07-31 10:34:12,319 plogtest.py 23 INFO This
started.
XmlTester.XmlParser 2007-07-31 10:34:12,319 plogtest.py 28 INFO Hi there!
XmlTester.XmlParser 2007-07-31 10:34:12,319 plogtest.py 28 INFO Hi there!
XmlTester.XmlParser 2007-07-31 10:34:12,319 plogtest.py 29 CRITICAL No file
named 'Info.pck'
XmlTester.XmlParser 2007-07-31 10:34:12,319 plogtest.py 29 CRITICAL No file
named 'Info.pck'
XmlTester 2007-07-31 10:34:12,319 plogtest.py 30 CRITICAL End of all
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