Photos: Happy developers in da house

Participants of the 19th SuperHappy DevHouse hackathon session descended on Tom Harrison's family home last weekend in Los Gatos, Calif. Harrison (far left) opened his house up to some 150 tech geeks for a day (and night) of coding, hacking and socializing. The session took place from 2 p.m. PDT Saturday to 2 a.m. Sunday.

Participants signed in and put colored stickers on their name tags to symbolize the different coding languages they know such as Python, Ruby, PHP and Perl.

Harrison, 25, an IT consultant and business student at San Jose State University, has, together with his parents, hosted four SuperHappy DevHouse sessions, which take place about every six weeks.