From c82ea08641487732926fc9a5178181e67714fc2b Mon Sep 17 00:00:00 2001
From: Monson Shao <holymonson@gmail.com>
Date: Mon, 23 Jul 2018 13:43:27 +0800
Subject: [PATCH] revert style change

---
 pandas/tests/frame/test_arithmetic.py    |  2 ++
 pandas/tests/internals/test_internals.py | 18 ++++++++----------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/pandas/tests/frame/test_arithmetic.py b/pandas/tests/frame/test_arithmetic.py
index eff5357b0722de..9a41360f4b7bd1 100644
--- a/pandas/tests/frame/test_arithmetic.py
+++ b/pandas/tests/frame/test_arithmetic.py
@@ -213,6 +213,7 @@ def test_df_sub_datetime64_not_ns(self):
         tm.assert_frame_equal(res, expected)
 
     def test_timestamp_df_add_dateoffset(self):
+        # GH 21610
         expected = pd.DataFrame([pd.Timestamp('2019')])
         result = pd.DataFrame([pd.Timestamp('2018')]) + pd.DateOffset(years=1)
         tm.assert_frame_equal(expected, result)
@@ -229,6 +230,7 @@ def test_timestamp_df_add_dateoffset(self):
         datetime.date(2017, 1, 1),
     ])
     def test_timestamp_df_sub_timestamp(self, other):
+        # GH 8554 12437
         expected = pd.DataFrame([pd.Timedelta('365d')])
         result = pd.DataFrame([pd.Timestamp('2018')]) - other
         tm.assert_frame_equal(expected, result)
diff --git a/pandas/tests/internals/test_internals.py b/pandas/tests/internals/test_internals.py
index 1645f9069fa267..f85978e2e3a588 100644
--- a/pandas/tests/internals/test_internals.py
+++ b/pandas/tests/internals/test_internals.py
@@ -1248,16 +1248,14 @@ class TestCanHoldElement(object):
         operator.pow,
     ], ids=lambda x: x.__name__)
     def test_binop_other(self, op, value, dtype):
-        skip = {
-            (operator.add, 'bool'),
-            (operator.sub, 'bool'),
-            (operator.mul, 'bool'),
-            (operator.truediv, 'bool'),
-            (operator.mod, 'i8'),
-            (operator.mod, 'complex128'),
-            (operator.mod, '<m8[ns]'),
-            (operator.pow, 'bool'),
-        }
+        skip = {(operator.add, 'bool'),
+                (operator.sub, 'bool'),
+                (operator.mul, 'bool'),
+                (operator.truediv, 'bool'),
+                (operator.mod, 'i8'),
+                (operator.mod, 'complex128'),
+                (operator.mod, '<m8[ns]'),
+                (operator.pow, 'bool')}
         if (op, dtype) in skip:
             pytest.skip("Invalid combination {},{}".format(op, dtype))
         e = DummyElement(value, dtype)