I've loved open source for over 20 years and fell in love with Python in the last century!
I've had fun with open source across diverse areas as astrophysics, civil energy, security appliances, performance tuning and numerical computing in finance, web sentiment mining and telecoms grade networking. More recently I've particularly enjoyed helping the UK government break down barriers to open source, and used some cool technologies for social good.
Right now I'm enjoying making technology and maths accessible to as many people as possible - eg by teaching Python to complete beginners, and helping make neural networks understandable.