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.

Learn how Python's dictionary data structure works as a powerful and versatile way to store and retrieve objects and data in your applications.

Microsoft's two new video series target beginner developers interested in using Python for machine-learning programs. Written by Liam Tung, Contributing Writer May 4, 2020 at 9:00 a.m. PT ...