typing

pola-rs · Oct 15, 2023 · ce3e7ad · ce3e7ad
1 parent 6b0444a
commit ce3e7ad
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/py-polars/tests/unit/operations/test_aggregations.py b/py-polars/tests/unit/operations/test_aggregations.py
@@ -2,7 +2,7 @@
 
 import math
 from datetime import date, datetime, timedelta
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, cast
 
 import numpy as np
 import pytest
@@ -102,7 +102,7 @@ def test_median() -> None:
 
 def test_single_element_std() -> None:
     s = pl.Series([1])
-    assert math.isnan(s.std(ddof=1))
+    assert math.isnan(cast(float, s.std(ddof=1)))
     assert s.std(ddof=0) == 0.0