A retro game engine for Python

Fit interpretable models. Explain blackbox machine learning.

Twelve Data Python Client - Financial data API & WebSocket

Programmatically collect normalized news from (almost) any website.

Python mutation testing: test your tests! Safely run mutation trials without source code modifications and see what will get past your test suite.

Apache Arrow is a multi-language toolbox for accelerated data interchange and in-memory processing

Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more

The QuantLib C++ library