Most of the case 20x faster not just 4x. 4x faster is mostly bad cases. Worst cases ( a bit slower than python) c-extension for these needing cext, use python.

Most of the case 20x faster not just 4x. 4x faster is mostly bad cases. Worst cases ( a bit slower than python) c-extension for these needing cext, use python. Why rewrite when you can achieve same without any code changes? PyPy performance rivals golang . In OP Case this could increase performance by 20x easily.