Re: symbolic package fail (Octave 5.2.0/Symbolic 2.9.0)

[José Abílio Matos]

On Wednesday, June 23, 2021 7:24:35 PM WEST przemek klosowski via Help-octave wrote:

> octave-5.2.0-12.fc34.x86_64

> octave-symbolic-2.9.0-5.fc34.noarch

>

> doesn't work:

>

> pkg load symbolic

>

> syms xx

>

> Symbolic pkg v2.9.0: Traceback (most recent call last):

>    File "<stdin>", line 28, in <module>

> AttributeError: '_PrintFunction' object has no attribute '__globals__'

> Closing the Python communications link.

>

> error: Python exception: AttributeError: '_PrintFunction' object has no

> attribute '__globals__'

>      occurred in python_header import block.

>      Try "sympref reset" and repeat your command?

>      (consider filing an issue at https://github.com/cbm755/octsympy/issues)

> error: called from

>      pycall_sympy__ at line 191 column 5

>      valid_sym_assumptions at line 38 column 10

>      assumptions at line 82 column 7

>      syms at line 97 column 13

>

>

> It's probably some Python 3 integration problem; before I open a

> Bugzilla issue for it I thought I'd ask here.

Octave symbolic does not work with sympy > 1.5 (we can mostly patch it for 1.6, which I did for Fedora):

https://octave.discourse.group/t/problem-running-symbolic-package-v2-9-0-on-macos-and-other-systems-with-sympy-v1-7-1/748/2

BTW by now this should be a FAQ. :-) The previous is just the first occurrence that appeared when searching for it. :-)

FWIW most of the question now goes into discourse.

Best regards,

--

José Matos