John Posner <jjpos...@optimum.net> writes: > > excessblk = None > > if total > P.BASE: > > excessblk = ... > > […]
> But doesn't it violate the DRY principle? The token "excessblk" > appears twice instead of once. No, the DRY principle <URL:http://c2.com/cgi/wiki?DontRepeatYourself> doesn't speak against assigning two *different* values in two *different* circumstances. That's not duplication, and doesn't risk contradiction. DRY speaks against repeating the same *meaning* in two different places. Because this concept is expressed in natural language and not a programming language, and because we don't speak in a language under the same principles we espouse for programming, there are multiple terms used for this concept :-) Another term which makes the point slightly more sharply is SPOT: there should be a Single Point Of Truth for each fact in the overall system. -- \ “What I have to do is see, at any rate, that I do not lend | `\ myself to the wrong which I condemn.” —Henry Thoreau, _Civil | _o__) Disobedience_ | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
