In <8b3d06eb-0027-4396-bdf8-fee0cc9ff...@googlegroups.com> vlyamt...@gmail.com writes:
> i have list of strings "data" and i am trying to build reverse list data1 > data1 = [] > for i in range(len(data)): > j = len(data) - i > data1.append(data[j]) > but i have the following error: > data1.append(data[j]) > IndexError: list index out of range > > am i doing it wrong? > Thanks Python lists are zero-indexed, meaning a list of five items will have indexes 0 to 4. The first time through your loop, i is 0, so j = len(data) - i evaluates to j = len(data) which would yield 5 for a five-element list, but the last actual element is in data[4]. -- John Gordon A is for Amy, who fell down the stairs gor...@panix.com B is for Basil, assaulted by bears -- Edward Gorey, "The Gashlycrumb Tinies" -- https://mail.python.org/mailman/listinfo/python-list