Pattern: Use of non-lazy logging
Issue: -
Used when a logging statement has a call form of logging.<logging method>(format_string % (format_args...)). Such calls should leave string interpolation to the logging method itself so that the program may avoid incurring the cost of the interpolation in those cases in which no message will be logged.
Example of incorrect code:
logging.warn('%s, %s' % (1, 2))Example of correct code:
logging.warn('%s, %s', 1, 2)