What is Matplotlib?
Matplotlib is a low level graph plotting library in python that serves as a visualization utility.
Matplotlib was created by John D. Hunter.
Matplotlib is open source and we can use it freely.
Matplotlib is mostly written in python, a few segments are written in C, Objective-C and Javascript for Platform compatibility.
Where is the Matplotlib Codebase?
The source code for Matplotlib is located at this github repository [https://github.com/matplotlib/matplotlib