On Mar 21, 8:14 am, [EMAIL PROTECTED] wrote: > On Mar 20, 9:28 am, "Jerry Hill" <[EMAIL PROTECTED]> wrote: > > On Thu, Mar 20, 2008 at 3:42 AM, Steven D'Aprano > > <[EMAIL PROTECTED]> wrote: > > > On Wed, 19 Mar 2008 23:06:44 -0700, royG wrote: > > > > > suppose > > > > origsz=(400,300) > > > > i want to divide the origsize by 2.5 so i can resize to (160,120) > > > > > scale=2.5 > > > > how can i get the newsz? > > > > obviously origsz/2.5 won't work .. > > > > newsz = (origsz[0]/scale, origsz[1]/scale) > > > That works fine for a 2-tuple, but might get unwieldy for larger > > tuples, or if you don't know the length until runtime. A more general > > solution might use a generator expression, like this: > > > newsz = tuple(x/scale for x in origsz) > > You want to perform a uniform call on the elements of a collection. > +1 compose.
By the way. -And sorry for interrupting the OP's time- I feel that control flow objects could be a really powerful addition to a language. Compose a for-loop. -- http://mail.python.org/mailman/listinfo/python-list