feedback

Author: arw2019

pandas/core/groupby/groupby.py

@@ -696,7 +696,7 @@ def _set_result_index_ordered(self, result):
             and self.axis == 0
             and len(result.index) < len(self._selected_obj.index)
         ):
-            result.index = self._selected_obj.index[result.index.asi8]
+            pass
         else:
             result.set_axis(self.obj._get_axis(self.axis), axis=self.axis, inplace=True)
         return result

pandas/core/groupby/ops.py

@@ -127,7 +127,7 @@ def get_iterator(self, data: FrameOrSeries, axis: int = 0):
         splitter = self._get_splitter(data, axis=axis)
         keys = self._get_group_keys()
         for key, (i, group) in zip(keys, splitter):
-            yield key, group.dropna() if self.dropna else group
+            yield key, group
 
     def _get_splitter(self, data: FrameOrSeries, axis: int = 0) -> "DataSplitter":
         comp_ids, _, ngroups = self.group_info