Most code-blocks/statements referencing an external library (mlab, matplot) in the example notebook wouldn't run without an import of pylab. I created a cell at the top with the following
```
from p…
title: Data Storytelling
org: University of Illinois Urbana-Champaign
course_listing: JOUR460
time_period: 2021 Spring
syllabus: https://ymn.web.illinois.edu/file/Syllabus_Data…