python3.10 gpy SyntaxWarning (literal with is)

[DaanVanVugt]

Hi, I'm encountering the following warning (turned error by our CI) with python3.9 and python3.10 (did not check others)

run_bq.py:10: in
import GPy
/app/.venv/lib/python3.10/site-packages/GPy/init.py:6: in
from . import core
/app/.venv/lib/python3.10/site-packages/GPy/core/init.py:49: in
from .gp import GP
/app/.venv/lib/python3.10/site-packages/GPy/core/gp.py:9: in
from .. import kern
/app/.venv/lib/python3.10/site-packages/GPy/kern/init.py:63: in
from .src.symmetric import Symmetric
E File "/app/.venv/lib/python3.10/site-packages/GPy/kern/src/symmetric.py", line 56
E if symmetry_type is 'odd':
E ^^^^^^^^^^^^^^^^^^^^^^
E SyntaxError: "is" with a literal. Did you mean "=="?

Note that to reproduce I need to remove the .pyc file generated

[MartinBubel]

Thanks for pointing this out!

We will consider this as a quality of life improvement in an upcoming release.

Would you be interested in doing a PR?

[DaanVanVugt]

Hi Martin, Thanks for considering. I don't have time to make a PR for this unfortunately, sorry.