There is one slight mistake there - saying that [::-1] is a special case. An empty value in a slice implies the beginning or the end, and when the stride is neg

There is one slight mistake there - saying that [::-1] is a special case. An empty value in a slice implies the beginning or the end, and when the stride is negative, the beginning is the last index, while the end is 0 - making [::-2] for example start from the last element and go down in jumps of two.