What is Altair? Why its declarative nature makes code concise and readable, and when to use it

IntroductionWhen drawing graphs in Python, it is common to use a step-by-step approach: setting axes, adjusting legends, ...

"Dividing by the sum of speeds" doesn't always work: Automatically generating entrance exam problems for traveler's arithmetic and diagrams

This is the seventh installment in a series about automatically generating middle school entrance exam problems using Python ...