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Question

I want to install python-glpk I followed the instructions here:

But when I tried to do this:

import glpk
print glpk.glp_version()

I have these errors

Thank you

Accepted Answer

Bug

For Ubuntu 16.04 LTS it is known issue - it was reported to LaunchPad.net on 2016-10-02 as bug 1629672.

We can fix this bug by installation of previous version of python-ply component with pip into your home folder:

#sudo apt-get install python-glpk # you did this before in question
sudo apt-get install python-pip
pip install ply==3.4 --user

And then test it with simple script (name it glpk_test.py) with contents:

#!/usr/bin/python2
import glpk
print glpk.glp_version()

then make it executable with chmod +x glpk_test.py and execute with ./glpk_test.py.

The output on Ubuntu 16.04 LTS will be:

4.57