Cython. K. W. Smith

 Cython: A Guide for Python Programmers covers all you need to know about the epon‐ ymous creole programming language and Python-to-C compiler. If you have heard of Cython and want to find out more, or if you have been using Cython and want to go deeper, then this book is for you.
 Cython is not another experimental (and all too often minimally maintained) language x–to–language y compiler project. Neither is it limited to an interesting research project that never achieves widespread use. Cython is an integral part of foundational projects in the Python world. It is battle-tested in real-world environments, and it continues to innovate to provide better performance, greater ease of use, and better coverage of new Python features.