[Python] Lazy logger message string evaluation

I'm using standard python logging module in my python application:


import logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("log")
while True:
logger.debug('Stupid log message " + ' '.join([str(i) for i in range(20)]) )
# Do something


The issue is that although debug level is not enabled, that stupid log message is evaluated on each loop iteration, which harms performance badly.

Is there any solution for this?

In C++ we have log4cxx package that provides macros like this:
LOG4CXX_DEBUG(logger, messasage)
That effectively evaluates to


if (log4cxx::debugEnabled(logger)) {
log4cxx.log(logger,log4cxx::LOG4CXX_DEBUG, message)
}


But since there are no macros in Python (AFAIK), if there a efficient way to do logging?

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