In this Matplotlib tutorial video, we're going to cover how to handle the conversion of unix time stamps to then plot date stamps in your graph. With the Yahoo Finance API, you will notice that if you use large time frames, like 1y for one year, you will get those date stamps we've been working with, but, if you use something like 10d for 10 days, you will instead get timestamps that are unix time.
Unix time is the number of seconds after Jan 1st 1970, and it represents a normalized method for time across programs. That said, Matplotlib doesn't want unix time stamps.
sample code: pythonprogramming.net
Learn how to visualize data in the form of line graphs, bar charts, pie charts, 3D graphs, and more with Python 3 and Matplotlib.