Data Scientist Training for Librarians (DST4L) is an experimental course, started at the Harvard-Smithsonian Center for Astrophysics John G. Wolbach Library and the Harvard Library to train librarians to respond to the growing data needs of their communities. Data science techniques are becoming increasingly important to all fields of scholarship. In this hands-on course, librarians learn the latest tools for extracting, wrangling, storing, analyzing, and visualizing data. By experiencing the research data lifecycle themselves, librarians develop the data savvy skills that can help transform the services they offer. Thanks to the great souls and engaged librarians at the DTU Library, The Royal Library in Copenhagen, and The Royal School of Library and Information Science and fundings from our contributors, DST4L is coming to Copenhagen, again. All teaching material will be made available via the DST4L @ Copenhagen website after the event is over. The workshop will be live streamed and recorded for people not attending the 3 days.