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Author: arw2019

pandas/tests/groupby/test_groupby.py

@@ -1265,8 +1265,7 @@ def test_groupby_nat_exclude():
     tm.assert_frame_equal(grouped.get_group(Timestamp("2013-01-01")), df.iloc[[1, 7]])
     tm.assert_frame_equal(grouped.get_group(Timestamp("2013-02-01")), df.iloc[[3, 5]])
 
-    # GH35014
-    with pytest.raises(KeyError):
+    with pytest.raises(KeyError, match=r"^NaT$"):
         grouped.get_group(pd.NaT)
 
     nan_df = DataFrame(