diff --git a/pandas/tests/frame/test_analytics.py b/pandas/tests/frame/test_analytics.py
index 8ba9cc74e285d..c202a07c9ef8a 100644
--- a/pandas/tests/frame/test_analytics.py
+++ b/pandas/tests/frame/test_analytics.py
@@ -1931,13 +1931,12 @@ def test_clip_against_frame(self, axis):
         tm.assert_frame_equal(clipped_df[ub_mask], ub[ub_mask])
         tm.assert_frame_equal(clipped_df[mask], df[mask])
 
-
     def test_clip_with_na_args(self):
         """Should process np.nan argument as None """
         # GH # 17276
         self.frame.clip(np.nan)
-        self.frame.clip(upper=[1,2,np.nan])
-        self.frame.clip(lower=[1,np.nan,3])
+        self.frame.clip(upper=[1, 2, np.nan])
+        self.frame.clip(lower=[1, np.nan, 3])
         self.frame.clip(upper=np.nan, lower=np.nan)
 
     # Matrix-like
diff --git a/pandas/tests/series/test_analytics.py b/pandas/tests/series/test_analytics.py
index 7a9ffb2a62411..13900536227e0 100644
--- a/pandas/tests/series/test_analytics.py
+++ b/pandas/tests/series/test_analytics.py
@@ -1003,10 +1003,11 @@ def test_clip_types_and_nulls(self):
     def test_clip_with_na_args(self):
         """Should process np.nan argument as None """
         # GH # 17276
-        s = Series([1,2,3])
+        s = Series([1, 2, 3])
+
         s.clip(np.nan)
-        s.clip(upper=[1,2,np.nan])
-        s.clip(lower=[1,np.nan,3])
+        s.clip(upper=[1, 2, np.nan])
+        s.clip(lower=[1, np.nan, 3])
         s.clip(upper=np.nan, lower=np.nan)
 
     def test_clip_against_series(self):