From 8923fd2fef4098793e5980f94e7779be2d11c977 Mon Sep 17 00:00:00 2001 From: Simon Hawkins Date: Wed, 6 May 2020 10:14:07 +0100 Subject: [PATCH] release note for #33102 (#34005) --- doc/source/whatsnew/v1.0.4.rst | 1 + 1 file changed, 1 insertion(+) diff --git a/doc/source/whatsnew/v1.0.4.rst b/doc/source/whatsnew/v1.0.4.rst index 294b2c3512623..48680d2b698a8 100644 --- a/doc/source/whatsnew/v1.0.4.rst +++ b/doc/source/whatsnew/v1.0.4.rst @@ -18,6 +18,7 @@ Fixed regressions - Bug where :meth:`Series.isna` and :meth:`DataFrame.isna` would raise for categorical dtype when ``pandas.options.mode.use_inf_as_na`` was set to ``True`` (:issue:`33594`) - Bug in :meth:`GroupBy.first` and :meth:`GroupBy.last` where None is not preserved in object dtype (:issue:`32800`) - Bug in DataFrame reductions using ``numeric_only=True`` and ExtensionArrays (:issue:`33256`). +- Fix performance regression in ``memory_usage(deep=True)`` for object dtype (:issue:`33012`) - Bug where :meth:`Categorical.replace` would replace with ``NaN`` whenever the new value and replacement value were equal (:issue:`33288`) -