I'm Kenta Murata, a researcher at Speee Inc. I released the first stable version, 1.0, of PyCall library a few days ago *1. PyCall provides a mechanism to call Python interpreter from Ruby. Using PyCall, you can use Python's famous tools for data science from Ruby in a generic way. In RubyKaigi 2017, that is held on for 3 days from 18th in the next week, I will talk about the current situation of