Bump statsmodels to 0.14.5 to fix scipy 1.16+ import error (#420)

Author: C1587S

requirements.txt

@@ -5,7 +5,7 @@ numpy==1.26.4
 matplotlib==3.10.1
 dask[array, distributed]==2025.2.0
 requests==2.32.3
-statsmodels==0.14.4
+statsmodels==0.14.5
 pytest==8.4.1
 pytest-cov==6.2.1
 zarr==2.18.4

tests/test_statsmodels_scipy_compatibility.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+"""
+Compatibility test: statsmodels vs scipy
+
+This script verifies that statsmodels >= 0.14.5 is compatible with scipy >= 1.16.0,
+resolving the import error caused by the removal of `_lazywhere` in scipy internals.
+
+Reference:
+- statsmodels 0.14.5 release notes: https://github.com/statsmodels/statsmodels/releases/tag/v0.14.5
+
+Usage:
+    python test_statsmodels_scipy_compatibility.py
+    pytest test_statsmodels_scipy_compatibility.py
+"""
+
+import sys
+import importlib
+
+
+def check_versions():
+    """Print installed versions of relevant packages."""
+    print("Installed package versions:")
+    for pkg in ["scipy", "statsmodels", "numpy"]:
+        try:
+            mod = importlib.import_module(pkg)
+            print(f"  {pkg:<12} {mod.__version__}")
+        except ImportError:
+            print(f"  {pkg:<12} not installed")
+    print()
+
+
+def test_statsmodels_import():
+    """Ensure statsmodels can be imported and has expected version."""
+    import statsmodels
+    assert statsmodels.__version__ >= "0.14.5"
+
+
+def test_statsmodels_api_import():
+    """Ensure statsmodels.api can be imported without triggering ImportError."""
+    import statsmodels.api as sm
+    assert hasattr(sm, "OLS")
+    assert len(dir(sm)) > 10  # Sanity check
+
+
+def test_problematic_modules():
+    """Test modules previously affected by _lazywhere import failure."""
+    problematic_modules = [
+        "statsmodels.genmod._tweedie_compound_poisson",
+        "statsmodels.distributions.discrete",
+    ]
+
+    for module_name in problematic_modules:
+        module = importlib.import_module(module_name)
+        assert module is not None
+
+
+def run_cli_mode():
+    """Run all tests manually in CLI mode with status output."""
+    print("=" * 60)
+    print("Running statsmodels/scipy compatibility checks")
+    print("=" * 60)
+    check_versions()
+
+    all_passed = True
+
+    try:
+        test_statsmodels_import()
+        print("statsmodels import: PASSED")
+    except Exception as e:
+        print(f"statsmodels import: FAILED ({e})")
+        all_passed = False
+
+    try:
+        test_statsmodels_api_import()
+        print("statsmodels.api import: PASSED")
+    except Exception as e:
+        print(f"statsmodels.api import: FAILED ({e})")
+        all_passed = False
+
+    try:
+        test_problematic_modules()
+        print("problematic module imports: PASSED")
+    except Exception as e:
+        print(f"problematic module imports: FAILED ({e})")
+        all_passed = False
+
+    print("=" * 60)
+    if all_passed:
+        print("All compatibility checks passed.")
+        sys.exit(0)
+    else:
+        print("One or more compatibility checks failed.")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    run_cli_mode()