More whatsnew

Author: batterseapower

doc/source/whatsnew/v1.0.0.rst

@@ -164,6 +164,9 @@ Indexing
 
 - Bug in assignment using a reverse slicer (:issue:`26939`)
 - Bug in reindexing a :meth:`PeriodIndex` with another type of index that contained a `Period` (:issue:`28323`) (:issue:`28337`)
+- :meth:`Index.union` could fail when the LHS contained duplicates (:issue:`28257`)
+- :meth:`Index.get_indexer_non_unique` could fail with `TypeError` in some cases, such as when searching for ints in a string index (:issue:`28257`)
+-
 
 Missing
 ^^^^^^^