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pythoncondapulpcoin-or-cbc

PulpSolverError: Not Available check permissions

I run the 'PuLP' solver on my OSx and after some conda updates it stopped recognizing the solver.

I call:

solver = pulp.get_solver('PULP_CBC_CMD')
prob.solve(solver)

I get:

pulp.apis.core.PulpSolverError: PULP_CBC_CMD: Not Available (check permissions on /opt/anaconda3/envs/my_env/lib/python3.8/site-packages/pulp/apis/../solverdir/cbc/osx/64/cbc)

When I asked for a path I got:

pl.pulp_cbc_path
Out[9]: '/opt/anaconda3/envs/ExMAS/lib/python3.8/site-packages/pulp/apis/../solverdir/cbc/osx/64/cbc

Maybe interestingly, my conda env is for python 3.9 and my PuLP is in3.8 folder

My PuLP is 2.6.0

Thanks

Solution

  • Ok, seems fixed.

    when I unistalled pulp- both from conda and pip (I think by default my conda pulp was used) and then installed them again (only with pip now)

    it seems to be solved. maybe this was issue with conda installation and pip installation was fine...?