In Python, the most common of these data types is called the "list." The list is a zero-indexed collection of data of any type, stored linearly: the first item is at index 0, the second at index 1 ...

For example, using an index of -1 is a handy way to grab the last item from a list no matter the size of the list. In that case, list_of_ints[-1] yields 3, and list_of_objects[-1] yields None.

One of Python's best features is the number of libraries you can use with the language. Not only does Python come with lots ...