formatted with black

Author: debnathshoham

pandas/tests/reshape/merge/test_merge_anti.py

@@ -12,16 +12,23 @@
 
 class Test_AntiJoin:
     @pytest.mark.parametrize(
-        "how, exp_index, exp_values", [
+        "how, exp_index, exp_values",
+        [
             ("anti_left", ["c"], [3, 30, np.nan, np.nan]),
             ("anti_right", ["d"], [np.nan, np.nan, 4, 40]),
-            ("anti_full", ["c", "d"], [[3, 30, np.nan, np.nan], [np.nan, np.nan, 4, 40]])
-            ]
+            (
+                "anti_full",
+                ["c", "d"],
+                [[3, 30, np.nan, np.nan], [np.nan, np.nan, 4, 40]],
+            ),
+        ],
     )
     def test_basic_anti_index(self, how, exp_index, exp_values):
         left = DataFrame({"A": [1, 2, 3], "C": [10, 20, 30]}, index=["a", "b", "c"])
         right = DataFrame({"B": [1, 2, 4], "C": [10, 20, 40]}, index=["a", "b", "d"])
-        expected = DataFrame(exp_values, index=exp_index, columns=["A", "C_x", "B", "C_y"])
+        expected = DataFrame(
+            exp_values, index=exp_index, columns=["A", "C_x", "B", "C_y"]
+        )
         result = merge(left, right, how=how, left_index=True, right_index=True)
         tm.assert_frame_equal(result, expected)