[Wolfgang Lipp] > reminds me of dict.get()... i think in both cases being explicit:: > > beast = d.setdefault( 666, None ) > beast = d.get( 666, None ) > > just reads better, allthemore since at least in my code what comes > next is invariably a test 'if beast is None:...'. so > > beast = d.setdefault( 666 ) > if beast is None: > ...
Do you actually do this with setdefault()? It's not at all the same as the get() example next, because d.setdefault(666) may _also_ have the side effect of permanently adding a 666->None mapping to d. d.get(...) never mutates d. > and > > beast = d.get( 666 ) > if beast is None: > ... > > a shorter but a tad too implicit for my feeling. Nevertheless, 1-argument get() is used a lot. Outside the test suite, I've only found one use of 1-argument setdefault() so far, and it was a poor use (used two lines of code to emulate what dict.pop() does directly). _______________________________________________ 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
