Add support for Python 3.14 and drop support for Python 3.11

.github/workflows/pr.yml

@@ -7,11 +7,11 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.11
+          python-version: "3.14"
       - uses: psf/black@stable
         with:
           options: ". -l 79 --check"

.github/workflows/push.yml

@@ -10,11 +10,11 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.11
+          python-version: "3.14"
       - uses: psf/black@stable
         with:
           options: ". -l 79 --check"

setup.py

@@ -4,7 +4,7 @@
     name="tmd",
     version="2.1.4",
     packages=find_packages(),
-    python_requires=">=3.11,<3.14",
+    python_requires=">=3.12,<3.15",
     install_requires=[
         "taxcalc>=6.8.0",
         "numpy",

tests/test_prepare_targets.py

@@ -52,7 +52,8 @@ class TestSOIShares:
     """Test that SOI shares are computed correctly."""
 
     @pytest.fixture(scope="class")
-    def shares_data(self):
+    @classmethod
+    def shares_data(cls):
         """Load SOI data and compute shares for 2022."""
         soilong = create_soilong(SOI_RAW_DIR, years=[2022])
         pop_df = get_state_population(2022)
@@ -134,7 +135,8 @@ class TestTargetFileWriter:
     """Test recipe expansion produces correct target files."""
 
     @pytest.fixture(scope="class")
-    def mn_targets(self, tmp_path_factory):
+    @classmethod
+    def mn_targets(cls, tmp_path_factory):
         """Run the full pipeline for MN."""
         enhanced = prepare_area_targets(
             area_type=AreaType.STATE,
@@ -252,7 +254,8 @@ class TestCDShares:
     """Validate the pre-computed CD shares file."""
 
     @pytest.fixture(scope="class")
-    def cd_shares(self, congress):
+    @classmethod
+    def cd_shares(cls, congress):
         """Load the pre-computed CD shares CSV for the given Congress."""
         path = _PREPARE / "data" / f"cds_{congress}_shares.csv"
         if not path.exists():
@@ -302,7 +305,8 @@ class TestCDTargetFiles:
     """Validate CD target file structure (no solving)."""
 
     @pytest.fixture(scope="class")
-    def cd_target_dir(self, congress):
+    @classmethod
+    def cd_target_dir(cls, congress):
         """Path to CD target files for the given Congress."""
         path = REPO_ROOT / "tmd" / "areas" / "targets" / f"cds_{congress}"
         if not path.exists() or not list(path.glob("*_targets.csv")):

tests/test_state_weight_results.py

@@ -105,18 +105,19 @@ def test_solver_status_solved(self, state):
         ), f"{state}: solver did not report Solved"
 
 
+@pytest.fixture(scope="module")
+def vdf():
+    """Load TMD data once for all accuracy tests."""
+    return _load_taxcalc_data()
+
+
 @pytest.mark.skipif(
     not _HAS_CACHED,
     reason="Cached TMD data files not available",
 )
 class TestStateTargetAccuracy:
     """Verify weighted sums hit targets within tolerance."""
 
-    @pytest.fixture(scope="class")
-    def vdf(self):
-        """Load TMD data once for all accuracy tests."""
-        return _load_taxcalc_data()
-
     @pytest.mark.parametrize(
         "state",
         ["al", "ca", "mn", "ny", "tx"],