how to reload a cython module interactively using pyximport

Question

When writing python code, my typical workflow is to use the interactive prompt and do something like

write function
repeat until working:
  test function
  e         


        

Answer 1

I found a poorly documented feature in the "pyximport.install" function that allows a cython module to be reloaded. With this feature set to True, you can load/reload your cython modules interactively without having to restart python.

If you initialize your cython module with:

import pyximport
pyximport.install(reload_support=True)
import my_functions as mf

You can make changes to your cython module, and then reload with:

reload(mf)

Hopefully this will be of use to someone.