Cython is a code generation tool so it is often much harder to understand what the (intermediate) code is doing in more complex cases. This is especially true w

Cython is a code generation tool so it is often much harder to understand what the (intermediate) code is doing in more complex cases. This is especially true with numpy specific Cython code. And with Cython your debug story is more problematic. Cython is great but has some interesting performance corner cases, for example see: https://github.com/paulross/NotesOnCython https://github.com/paulross/NotesOnCython