Gurobi: Difference between revisions

Gurobi brings it's own version of Python which does not contain any 3rd-party Python packages except Gurobi.  In order to use Gurobi together with popular Python packages like NumPy, Matplotlib, Pandas and others, we need to create a [[Python#Creating_and_using_a_virtual_environment|virtual Python environment]] in which we can install both <code>gurobipy</code> and for example <code>pandas</code>. Before we start, we need to decide which combination of versions for Gurobi and Python to use.  A listing of the Python version(s) supported by the major gurobi versions installed in the previous through current standard environments (StdEnv) follows:

[name@server ~] module load StdEnv/2016; module load gurobi/8.1.1; cd $EBROOTGUROBI/lib; ls -d python*

python2.7 python2.7_utf16  python2.7_utf32  python3.5_utf32  python3.6_utf32 python3.7_utf32

[name@server ~] module load StdEnv/2020; module load gurobi/9.5.2; cd $EBROOTGUROBI/lib; ls -d python*

[name@server ~] module load StdEnv/2023; module load gurobi/10.0.3; cd $EBROOTGUROBI/lib; ls -d python*

python3.10_utf32  python3.11_utf32 python3.7  python3.7_utf32 python3.8_utf32  python3.9_utf32

  python3.11

We see that <code>gurobi/8.1.1</code> brings its own installation of <code>python2.7</code> and Python packages for Python 2.7, 3.5, 3.6 and 3.7 (<code>pythonX.Y_utf32</code>) while <code>gurobi/9.0.1</code> by default uses <code>python3.7</code> and brings Python packages for Python 2.7, 3.5, 3.6, 3.7 and 3.8 (<code>pythonX.Y_utf32</code>).  While <code>gurobi/11.0.1</code> by comparison only brings Python <code>3.11</code> along.