chore: run CI with Python 3.13

.github/workflows/build-extension.yml

@@ -23,16 +23,16 @@ jobs:
     - name: Install Python
       uses: actions/setup-python@v4
       with:
-        python-version: '3.12'
+        python-version: '3.13'
         architecture: 'x64'
 
     - name: Setup pip cache
       uses: actions/cache@v3
       with:
         path: ~/.cache/pip
-        key: pip-3.12-${{ hashFiles('package.json') }}
+        key: pip-3.13-${{ hashFiles('package.json') }}
         restore-keys: |
-          pip-3.12-
+          pip-3.13-
           pip-
 
     - name: Get yarn cache directory path

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - name: Checkout nglview repository

tests/test_widget.py

@@ -3,6 +3,7 @@
 import unittest
 from unittest.mock import MagicMock, patch
 from io import StringIO
+import sys
 
 import numpy as np
 import pytest
@@ -254,29 +255,35 @@ def update_coords(view=view):
         view.frame = 1000
         view.frame = 0
 
-    p_traj = pt.load(nv.datafiles.TRR, nv.datafiles.PDB)
-    view.add_trajectory(p_traj)
+    # FIXME: remove this workaround.
+    # https://github.com/nglviewer/nglview/pull/1167#issuecomment-3360759056
+    with_pytraj = sys.version_info < (3, 13)
+    offset = 0 if with_pytraj else 1
+
+    if with_pytraj:
+        p_traj = pt.load(nv.datafiles.TRR, nv.datafiles.PDB)
+        view.add_trajectory(p_traj)
     m_traj = md.load(nv.datafiles.XTC, top=nv.datafiles.PDB)
     view.add_trajectory(m_traj)
     # trigger updating coordinates
     update_coords()
-    assert len(view._coordinates_dict.keys()) == 2
+    assert len(view._coordinates_dict.keys()) == 2 - offset
     if has_MDAnalysis:
         from MDAnalysis import Universe
         mda_traj = Universe(nv.datafiles.PDB, nv.datafiles.TRR)
         view.add_trajectory(mda_traj)
         update_coords()
-        assert len(view._coordinates_dict.keys()) == 3
+        assert len(view._coordinates_dict.keys()) == 3 - offset
     if has_HTMD:
         from htmd import Molecule
         htmd_traj = Molecule(nv.datafiles.PDB)
         htmd_traj.filter('protein')
         view.add_trajectory(htmd_traj)
         update_coords()
         if has_MDAnalysis:
-            assert len(view._coordinates_dict.keys()) == 4
+            assert len(view._coordinates_dict.keys()) == 4 - offset
         else:
-            assert len(view._coordinates_dict.keys()) == 3
+            assert len(view._coordinates_dict.keys()) == 3 - offset
 
 
 def test_API_promise_to_have_add_more_backend():