Pybind11 – Seamless operability between C++11 and Python

I absolutely love this project. I've been making bindings for a C++ library using it recently and have yet to encounter a situation that was too tricky to bind properly. I'm loving the ability to take an abstract class from the C++ side of things and derive and override virtual functions in Python. Super excited about how much easier that makes it to do exploratory programming to get something that woks, and then worrying about writing it in C++ when I need that level of performance.

The lack of a dependency on Boost only sweetens the deal for me. I love what Boost has set out to do, but it's just such a huge dependency with a ve4y strange (for me) build system.

I used to work with Boost.Python, until I discovered Cython, which works like a charm for me. What are the reasons to use Pybind11 over Cython?