a[start:stop] # items start through stop-1 a[start:] # items start through the rest of the array a[:stop] # items from the beginning through stop-1 a[:] # a copy of the whole array

a[start:stop:step] # start through not past stop, by step

a[-1] # last item in the array a[-2:] # last two items in the array a[:-2] # everything except the last two items

a[::-1] # all items in the array, reversed a[1::-1] # the first two items, reversed a[:-3:-1] # the last two items, reversed a[-3::-1] # everything except the last two items, reversed