Steve Holden <[EMAIL PROTECTED]> writes: > 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.
What generator expression? I don't see a genexp in your examples. John -- http://mail.python.org/mailman/listinfo/python-list