Error: 'python_ipc_popen2' Undefined Near Line 62 Column 15 When Running Octave

Trying to run Octave on Mac. When I run the diagnose command sympref diagnose. I get that everything is configured fine: Symbolic package diagnostics ============================

Solution 1:

Ok, I've found out how to solve it. Super strange. Apparently Octave (or SymPy, not sure exactly) is looking for a system variable called Python like this with a capital P in the docs it's said the variable should be PYTHON. Anyway setting setenv Python <path to python> solved the issue.