The author of Sentdex is Harrison Kinsley

An entrepreneur at heart, Harrison runs multiple businesses:

• PythonProgramming.net - Programming tutorials for beginner to advanced programmers, covering topics from machine learning, to graphing, natural language processing, robotics, web development, game development, and a lot more.
• YouTube.com/sentdex - Video based tutorials to accompany PythonProgramming.net
• SeaofBTC.com - Algorithmic, automated, bitcoin trading.
• ...and of course this website!