Cython compiled C extension: ImportError: dynamic module does not define init function

Question

I have just compiled part of my C library as an extension using Cython, as a \"proof of concept\". I managed to hack the code (const correctnes problems etc aside), to final

Answer 1

Another really late answer in my case I had accidentally called cython in a terminal that was running python2, while trying to use the generated library from a terminal that was on another python environment, using python3.

Using the same python version everywhere fixed it.