Pulpsolvererror: Pulp: Error While Trying To Execute Glpsol In Python 2.7

I'm running PuLP on OS X via a iPython notebook and Python 2.7. glpk is installed using brew install homebrew/science/glpk and PuLP is installed via pip install pulp. However I'm g

Solution 1:

If you run

pulp.pulpTestAll()

you probably will see a line like this:

Solver pulp.solvers.GLPK_CMD unavailable

If so, all you have to do is to install glpk-utils package on your linux. If you succeeded with it, you should be able to call

glpsol

from command line, too.

Solution 2:

I had the same error in Ubuntu and this solved it.

It is necessary to issue the following command after make install:

sudo ldconfig

Ldconfig creates the necessary links and cache to the most recent shared libraries.

https://lists.gnu.org/archive/html/help-glpk/2013-09/msg00018.html