Ugh the Numba claims. It still has a high function call overhead from Python and is type restricted. I couldn't pass functions to SciPy ODE solvers without a 10

Ugh the Numba claims. It still has a high function call overhead from Python and is type restricted. I couldn't pass functions to SciPy ODE solvers without a 10x overhead of doing things directly in Julia and C++, so while a ton better than straight Python it was still bad. Also there are very few packages actually using Numba. It seems that more people like to talk about possibly using it than actually use it.