Andy Terrel, President of Numfocus and CTO of Fashion Metric, gave a presentation on the PyData community at the Data Science Pop Up in Austin. He discussed who a PyData scientist is, focusing on their skills in data, math/statistics, and understanding of domain-specific problems. Terrel also talked about the importance of open source code and maintenance through organizations like Numfocus that support collaborative data science projects. He provided an example of how IPython was used in a Nature journal article.