fixed formatting issues

Author: hugo

pandas/tests/indexing/test_datetime.py

@@ -7,14 +7,15 @@
 
 
 class TestDatetimeIndex(object):
+
     def test_setitem_with_datetime_tz(self):
         mask = np.array([True, False, True, False])
         idx = pd.date_range('20010101', periods=4, tz='UTC')
-        df = pd.DataFrame({'a' : np.arange(4)}, index=idx).astype('float64')
+        df = pd.DataFrame({'a': np.arange(4)}, index=idx).astype('float64')
         test = df.copy()
         test.loc[mask, :] = df.loc[mask, :]
         tm.assert_frame_equal(test, df)
-        
+
     def test_indexing_with_datetime_tz(self):
 
         # 8260