Python Multiprocessing error: AttributeError: module '__main__' has no attribute '__spec__'

Question

I\'m using Python 3.6 and am trying to follow along with the very first example at the website below (full code also below) and am getting the below error: https://docs.pyth

Answer 1

pdb users

The question didn't specifically mention Spyder nor Conda (though it is tagged as such). Hence, I will note that I found this can also happen when using pdb.

E.g.

python -m pdb myprogram.py

Passing spec = None would be a useful workaround if you wanted to persist with pdb.