Steve Holden schrieb:
Diez B. Roggisch wrote:
davy zhang schrieb:
mport logging
import pickle
# create logger
logger = logging.getLogger("simple_example")
logger.setLevel(logging.DEBUG)
# create console handler and set level to debug
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
# create formatter
formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s
- %(message)s ")
# add formatter to ch
ch.setFormatter(formatter)
# add ch to logger
logger.addHandler(ch)
d = {'key':'msg','key2':'msg2'}
# "application" code
logger.debug("debug message",d)#can not do this
logger.debug("yes you can: %r", d)
One deficiency of this approach, however, is that the string formatting
is performed even when no logging is required, thereby wasting a certain
amount of effort on unnecessary formatting.
Nope, it's not. It only happens when the message is really logged.
Diez
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