I guess I'll let Python documentation speak here by itself: http://docs.python.org/release/3.1.5/library/stdtypes.html#old-string-formatting-operations .format() method also allows you to print your custom objects properly (through __str__ or __repr__, if you defined these magic methods) without any butthurt.
Also, as an example of proper percent symbol usage: http://docs.python.org/3/library/logging.html?highlight=logging#formatter-objects This means, it's correct to write logger.info("I'm a teapot number %d", teapot_number), but not logger.info("I'm a teapot number %d" % teapot_number). And that's the only example I know of using % approach in modern Python code, you don't really need it anywhere else. On Wed, Dec 11, 2013 at 5:05 PM, Evgeniy L <[email protected]> wrote: > Hi, > > I several times saw patches with comments that we should use format > instead of '%' for string formatting. > > For example: > > In [17]: 'some text {0}'.format('ololo') > Out[17]: 'some text ololo' > > Instead of > > In [16]: 'some text %s' % 'ololo' > Out[16]: 'some text ololo' > > Nikolay, as I know you prefer (and most of this comments were from you) > first method, could you explain for all of us what is the difference? And > why we should use first method? And maybe we should add this info in some > of our docs? > > Thanks. > > -- > Mailing list: https://launchpad.net/~fuel-dev > Post to : [email protected] > Unsubscribe : https://launchpad.net/~fuel-dev > More help : https://help.launchpad.net/ListHelp > > -- Best regards, Nick Markov
-- Mailing list: https://launchpad.net/~fuel-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~fuel-dev More help : https://help.launchpad.net/ListHelp
