Fix precommit checks

Author: juleek

pandas/tests/groupby/test_grouping.py

@@ -444,13 +444,22 @@ def test_groupby_grouper_f_sanity_checked(self):
 
     def test_groupby_with_datetime_key(self):
         # GH 51158
-        df = DataFrame({"id": ["a", "b"] * 3, "b": pd.date_range("2000-01-01", "2000-01-03", freq="9H")})
-        grouper = pd.Grouper(key='b', freq="D")
-        g = df.groupby([grouper, 'id'])
+        df = DataFrame(
+            {
+                "id": ["a", "b"] * 3,
+                "b": date_range("2000-01-01", "2000-01-03", freq="9H"),
+            }
+        )
+        grouper = Grouper(key="b", freq="D")
+        g = df.groupby([grouper, "id"])
 
         # test number of groups
-        expected = {(pd.Timestamp("2000-01-01"), 'a'): [0, 2], (pd.Timestamp("2000-01-01"), 'b'): [1],
-                    (pd.Timestamp("2000-01-02"), 'a'): [4], (pd.Timestamp("2000-01-02"), 'b'): [3, 5]}
+        expected = {
+            (Timestamp("2000-01-01"), "a"): [0, 2],
+            (Timestamp("2000-01-01"), "b"): [1],
+            (Timestamp("2000-01-02"), "a"): [4],
+            (Timestamp("2000-01-02"), "b"): [3, 5],
+        }
         tm.assert_dict_equal(g.groups, expected)
 
         # test number of group keys