I used pybind11 for my open source asteroid detection code. It's very slick, especially it's ability to seamlessly convert between stl and python lists- for exa

I used pybind11 for my open source asteroid detection code. It's very slick, especially it's ability to seamlessly convert between stl and python lists- for example a vector of strings converts directly to a python list of strings. Also the interoperability with numpy. A class containing an stl of primitive types and the dimensions can easily be turned into a numpy array. Very neat