This is the story of how we made sure that tracking local school holidays in Python becomes possible for data scientists, using workalendar (code example below). But let’s start at the beginning: When we write models that interpret and forecast meter data, we often encounter demand patterns that change drastically during holiday periods. When this…

We believe open source software is a corner-stone of modern IT, and we’re proud that this month, we were able to contribute. Here, we describe how much work is behind such a simple bugfix. We use many libraries every day, one of them being Pandas, the popular data analysis / manipulation library for Python. With…