Add Python 3.13 to test matrix

.github/workflows/pytest.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false  # don't cancel other matrix jobs when one fails
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.9, "3.10", "3.11", "3.12"]
+        python-version: [3.9, "3.10", "3.11", "3.12", "3.13"]
         environment-type: [conda, bare]
         suffix: ['']  # placeholder as an alternative to "-min"
         include:

ci/requirements-py3.13.yml

@@ -0,0 +1,28 @@
+name: test_env
+channels:
+    - defaults
+    - conda-forge
+dependencies:
+    - coveralls
+    - cython
+    - ephem
+    - h5py
+    - numba
+    - numpy >= 1.17.3
+    - pandas >= 1.3.0
+    - pip
+    - pytest
+    - pytest-cov
+    - pytest-mock
+    - requests-mock
+    - pytest-timeout
+    - pytest-rerunfailures
+    - conda-forge::pytest-remotedata  # version in default channel is old
+    - python=3.12
+    - pytz
+    - requests
+    - scipy >= 1.6.0
+    - statsmodels
+    - pip:
+        - nrel-pysam>=2.0
+        # - solarfactors  # required shapely<2 isn't available for 3.12