The idea behind PyFlot its to provide an easy and quick way to create graphs in Python and to plot them out in a web page.
Backend developers sometimes have to work with statistics and metrics and bring that data from a server to a web page in form of charts.
PyFlot, appears as a shortcut and as a solution for some of this problems providing a nice a simple way to plot graphs just by modeling it in the backend.
Documentation is available on readthedocs.
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.