Alex Martelli wrote: > BJörn Lindqvist <[EMAIL PROTECTED]> wrote: > ... >> even2 = [(pos, col) for pos, col in iterimage(im, width, height, 2)] > > list(iterimage(etc etc)) > > is surely a better way to express identical semantics. More generally, > [x for x in whatever] (whether x is a single name or gets peculiarly > unpacked and repacked like here) is a good example of inappropriate LC, > to get back to the question in the subject: list(whatever) is the "one > obvious way" to perform the same task. > Clearly the comprehension you complain about is sub-optimal.
The essential difference, however, is between [x for x in iterimage(im, width, height, 2)] and list(iterimage(im, width, height, 2)) I agree that the latter is the obvious way, but the difference isn't as large as your leap makes it look - and we had to await the invention of the generator expression for it to be a practical choice. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://del.icio.us/steve.holden Recent Ramblings http://holdenweb.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list