Octave Symbolic Package (macOS) - error python

Question

Trying to run Octave on Mac with the Symbolic package After the install I ran a test (as shown in link above) by typing:

pkg load symbolic

syms x

However, I got an following error with syms x

octave:37> syms x
Symbolic pkg v2.9.0: sh: /usr/anaconda3/bin/python: No such file or directory
error: Cannot run the Python executable "/usr/anaconda3/bin/python"
      Try "sympref diagnose" for more information.
error: called from
      assert_have_python_and_sympy at line 61 column 7
      python_ipc_popen2 at line 79 column 5
      python_ipc_driver at line 62 column 15
      pycall_sympy__ at line 163 column 11
      valid_sym_assumptions at line 38 column 10
      assumptions at line 82 column 7
      syms at line 97 column 13
octave:37> 

I then tried sympref diagnose

octave:37> sympref diagnose

Symbolic package diagnostics
============================

Python and SymPy are needed for most features of the Symbolic package.

The Python interpreter is currently: "/usr/anaconda3/bin/python".

Computers may have more than one Python interpreter installed.  If you
need to, you can select a different one using the PYTHON environment
variable (see "help sympref").  For example, to use Python 2, try
setenv PYTHON python2
sympref reset

Attempting to run /usr/anaconda3/bin/python -c "print(\"Python says hello\")"

sh: /usr/anaconda3/bin/python: No such file or directory
status =  127
output = 

Unfortunately, that command failed!
We expected to see "status = 0" and "output = Python says hello".

* Is there an error message above?

* Do you have Python installed?

* Please try using "setenv" as described above.

I think it has to do with name of the python directory. there are 2 same questions: error: 'python_ipc_popen2' undefined near line 62 column 15 When running Octave

Installing Octave Symbolic Package using SymPy (macOS) - Can't get SymPy to work

Thanks in advance

Also if i remove anaconda:

octave:1> pkg load symbolic
octave:2> syms x
Symbolic pkg v2.9.0: sh: /Users/usr/octave/symbolic- 2.9.0/bin/py27.exe: Permission denied
error: Cannot run the Python executable "py27.exe"
      Try "sympref diagnose" for more information.
error: called from
      assert_have_python_and_sympy at line 61 column 7
      python_ipc_popen2 at line 79 column 5
      python_ipc_driver at line 62 column 15
      pycall_sympy__ at line 163 column 11
      valid_sym_assumptions at line 38 column 10
      assumptions at line 82 column 7
      syms at line 97 column 13
octave:2> sympref diagnose

Symbolic package diagnostics
============================

Python and SymPy are needed for most features of the Symbolic package.

The Python interpreter is currently: "py27.exe".

Computers may have more than one Python interpreter installed.  If you
need to, you can select a different one using the PYTHON environment
variable (see "help sympref").  For example, to use Python 2, try
  setenv PYTHON python2
  sympref reset

Attempting to run py27.exe -c "print(\"Python says hello\")"

sh: /Users/usr/octave/symbolic-2.9.0/bin/py27.exe: Permission denied
status =  126
output = 

Unfortunately, that command failed!
We expected to see "status = 0" and "output = Python says hello".

 * Is there an error message above?

 * Do you have Python installed?

 * Please try using "setenv" as described above.

 * Most systems search the PATH environment when looking for commands.

Answer 1

The problem seems disappeared if you upgrade from Octave 6.3 to a higher version of Octave in windows but I have not tested in Mac OS. However, Octave still lacks of fplot3 function for 3d curve plotting etc.