John Salerno wrote: > James Stroud wrote: > >> John Salerno wrote: >> >>> Given: >>> >>> numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] >>> >>> can someone explain to me why >>> >>> numbers[10:0:-2] results in [10, 8, 6, 4, 2]? >>> >>> I thought the first index, whether going forward or backward, was >>> inclusive. And there is no index of 10 in this list, so what is it >>> referring to? >>> >>> Thanks. >> >> >> Its referring to right after the end of the list, just as the 0 refers >> to just before the start of the list. The word "slice" is supposed to >> suggest cutting between (or before or after) elements. >> > > But why isn't the first index inclusive in this case? You skipped it with the -2 step size.
-- James Stroud UCLA-DOE Institute for Genomics and Proteomics Box 951570 Los Angeles, CA 90095 http://www.jamesstroud.com/ -- http://mail.python.org/mailman/listinfo/python-list
