Fix lint error

howsiwei · howsiwei · commit 9b5720573467 · 2020-01-09T03:06:24.000+08:00
diff --git a/pandas/core/indexing.py b/pandas/core/indexing.py
@@ -2008,6 +2008,7 @@ def _ensure_listlike_indexer(self, key):
                 except KeyError:
                     self.obj[k] = np.nan
 
+
 @Appender(IndexingMixin.iloc.__doc__)
 class _iLocIndexer(_LocationIndexer):
     _valid_types = (
