Up to now, you will have seen the core of what's possible with Cython. In this chapter, we covered calling into C++ classes from Cython. You learned to wrap templates and even look at a more complex application demonstrating the usage of gil and nogil.
Chapter 6, Further Reading is the final chapter and will review some final caveats and usages with Cython. I will show how you can use Cython with Python 3. Finally, we will look at related projects and my opinions on their usages.