On Mon, Feb 27, 2012 at 10:44 AM, Larry Hastings <la...@hastings.org> wrote: > On 02/26/2012 03:33 PM, Guido van Rossum wrote: >> >> One thing I'd like to see happening regardless is support for >> new-style formatting in the logging module. It's a little tricky to >> think how that would work, alas -- should this be a property of the >> logger or of the call? > > > There already is some support. logging.Formatter objects can be initialized > with a "style" parameter, making this a property of the logger. (New in > 3.2.) > > http://docs.python.org/py3k/library/logging.html#formatter-objects > > Is that what you had in mind?
It's half the puzzle (since composing the event fields into the actual log output is a logger action, you know the style when you supply the format string). The other half is that logging's lazy formatting currently only supporting printf-style format strings - to use brace formatting you currently have to preformat the messages, so you incur the formatting cost even if the message gets filtered out by the logging configuration. For that, a logger setting doesn't work, since one logger may be shared amongst multiple modules, some of which may use printf formatting, others brace formatting. It could possibly be a flag to getLogger() though - provide a facade on the existing logger type that sets an additional event property to specify the lazy formatting style. Cheers, Nick. -- Nick Coghlan | ncogh...@gmail.com | Brisbane, Australia _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
