My code / solution to calculate Pi using the ArcTan Taylor series expansion, as used by William Shanks to calculate Pi to 100 digits by hand in the 1800's. Pi = 16 arctan (1/5) - 4 arctan (1/239) ...
I am a GSSOC participant who like writing clean readable Python code, and I have interest in Math, Data Structures and Algorithms. Many developers don't like using things without knowing how it works ...