John Salerno wrote: > If I want to create a list of the form [100, 99, 99, 98, 98, 97, 97...] > (where each item is repeated twice after the first one), how might I do > that most efficiently? > > Right now I have this: > > series = [100] > for x in range(10): # just for testing > series.append(series[-1] - 1) > > But of course that only does it once, and I don't want to have to copy > and paste the append line. Perhaps there's a better way than this. > > Thanks.
series = [100] + [ t for t in range(99,90,-1) for _ in [0,1] ] (what's wrong with two appends again...?) -- http://mail.python.org/mailman/listinfo/python-list
