On May 6, 4:01 am, "J. Cliff Dyer" <j...@sdf.lonestar.org> wrote: > The way you have to bounce your eyes back and forth in the comprehension > makes it hard to read the logic. With the loop, on the other hand it is > blatantly obvious which way the nesting occurs.
> > >>>> [ item for j in a if len(j)==2 for item in j if item % 2 ] > > > ...opposed to... > > >>>> for j in a: > > > ... if len(j)==2: > > > ... for item in j: > > > ... if item % 2: > > > ... b.append(item) > > > ... > Much nicer. Thank you. Apart from the presence of 'item' at the beginning of the list comprehension as opposed to 'b.append(item)' at the end of the for- loop, how exactly does the listcomp force you to "bounce [..] back and forth" to follow the logic? The only other difference between the two is in the layout - the indentation & colons - otherwise they're structurally identical. -- http://mail.python.org/mailman/listinfo/python-list
