I'm Reuven Lerner, a professional Python trainer. That means I spend just about every day teaching Python to a different company, in a different city, or even a different country. (In 2019, I taught in the US, Europe, Israel, India, and China.)
I've been using Python since about 1992, have had my own consulting business since 1995, and have been training full time for more than 10 years.
I've spoken at PyCon and Euro Python, among other places. I'm a podcaster and author, most recently of "Python Workout," about to be released by Manning.
You can learn more about me at my site, https://lerner.co.il/