Luigi is a Python module for building complex pipelines of batch jobs. It handles dependency resolution, workflow management, visualization and more. I've picked three topics covering the framework itself, the open source aspect of Luigi and the fact that we use Luigi at a Spotify scale:
* Declarative Python Programming in Luigi
* Building an open source community
* Anecdotes of operating Luigi in Spotify
Luigi has a very vibrant community with many pull requests per day and hundreds of contributors. You can check it out at https://github.com/spotify/luigi
