Use StatisticsError for invalid kernels

python · rhettinger · Feb 25, 2024 · Feb 23, 2024 · Feb 23, 2024 · Feb 23, 2024
commit e29d64f8c41a953330d757eab2dd8b8b4b814f74
diff --git a/Lib/statistics.py b/Lib/statistics.py
@@ -938,7 +938,7 @@ def kde(data, h, kernel='normal'):
             support = 1.0
 
         case _:
-            raise ValueError(f'Unknown kernel name: {kernel!r}')
+            raise StatisticsError(f'Unknown kernel name: {kernel!r}')
 
     if support is None:
 

diff --git a/Lib/test/test_statistics.py b/Lib/test/test_statistics.py
@@ -2391,10 +2391,11 @@ def integrate(func, low, high, steps=10_000):
             kde(sample, h=0.0)                          # Negative bandwidth
         with self.assertRaises(TypeError):
             kde(sample, h='str')                        # Wrong bandwidth type
-        with self.assertRaises(ValueError):
+        with self.assertRaises(StatisticsError):
             kde(sample, h=1.0, kernel='bogus')          # Invalid kernel
 
-        # Test name and docstring
+        # Test name and docstring of the generated function
+
         h = 1.5
         kernel = 'cosine'
         f_hat = kde(sample, h, kernel)