How do you specify the solver in Pulp

Question

I use the library Pulp to solve linear programming problems in python, I read that the solver can be specified (primal or dual simplex, interior point, ...), but I found nothing about how to do it. The only example I read is calling the solve() function with

prob.solve(pulp.COIN_CMD(msg=1, options=['dualSimplex']))

but it generates the following error: PulpSolverError: Pulp: cannot execute cbc.exe cwd:

Answer 1

It looks like your pulp installation has issues with its cbc.exe.

Is it actually there and axecuteable? Have you followed the installation instructions?

https://coin-or.github.io/pulp/main/installing_pulp_at_home.html

You could verify this like this:

>>> import pulp
>>> pulp.pulpTestAll()

to your question

your calling solve correctly, I think. Fix the cbc.exe error at first :)