BUG: Fixed bug with setting a Series and the consistency of the colum…

…n type. (pandas-dev#43996)
DamianBarabonkovQC · Oct 12, 2021 · 245c3bf · 245c3bf
2 parents 075ec87 + 7f4e22d
commit 245c3bf
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/pandas/core/indexing.py b/pandas/core/indexing.py
@@ -1820,10 +1820,10 @@ def _setitem_single_column(self, loc: int, value, plane_indexer):
             and not is_empty_indexer(pi, value)
         ):
             if is_list_like(pi):
-                ser = value[np.argsort(pi)]
+                ser.update(value[np.argsort(pi)])
             else:
                 # in case of slice
-                ser = value[pi]
+                ser.update(value[pi])
         else:
             # set the item, possibly having a dtype change
             ser = ser.copy()