Error findfont

[clairedavid]

On the tutorial at [23] (right after pip install hist an error messages shows up:
findfont: Font family ['sans-serif'] not found. Falling back to DejaVu Sans.

[jpivarski]

Thanks for reporting this! I saw that as well. Not finding fonts is the sort of thing that happens in real life—we could tune up the presentation so that it doesn't give any warnings like this, but in regular usage, stuff that that is going to happen. I decided to leave it.