manstey wrote: > for index in reversed(range(0,len(a)-1)): > if '75' in b[index][1]: > b[index][1].remove('75') > b[index][1].append('99') >
What on earth is all that messing around in the for loop intended to do? If you want a range from len(a)-2 to 0 inclusive then just do it in range directly (and did you really mean not to look at the last element?), if you actually just wanted to iterate through b in reverse, then just iterate through b in reverse: b = copy.deepcopy(a) for element in reversed(b): if '75' in element[1]: element[1].remove('75') element[1].append('99') -- http://mail.python.org/mailman/listinfo/python-list