bqplot is a Python plotting library in which every plot attribute is an interactive widget. ... for example, bqplot can generate a map of U.S. electoral results by county.

“It took less than five hours to gather the data, and another 12 hours or so to generate the map image.” For that, he used the matplotlib plotting library in the programing language Python.

Eventually, they developed the interactive plotting library bqplot. bqplot allows anyone to build fully interactive web applications in Python, using surprisingly few lines of code.