A conda package wrapping the CoFFEE poisson solver: https://data.mendeley.com/datasets/s2x4d542dc/1
This conda package exposes the PoissonSolver python package from the above library. After installing this package you should be able to import the PoissonSolver python package from the above library in your python code.
conda install -c breathe coffee_poisson_solver
from PoissonSolver import *
...