What’s new in 1.2.5 (June 22, 2021)#

These are the changes in pandas 1.2.5. See Release notes for a full changelog including other versions of pandas.

Fixed regressions#

Fixed regression in concat() between two DataFrame where one has an Index that is all-None and the other is DatetimeIndex incorrectly raising (GH 40841)
Fixed regression in DataFrame.sum() and DataFrame.prod() when min_count and numeric_only are both given (GH 41074)
Fixed regression in read_csv() when using memory_map=True with an non-UTF8 encoding (GH 40986)
Fixed regression in DataFrame.replace() and Series.replace() when the values to replace is a NumPy float array (GH 40371)
Fixed regression in ExcelFile() when a corrupt file is opened but not closed (GH 41778)
Fixed regression in DataFrame.astype() with dtype=str failing to convert NaN in categorical columns (GH 41797)

A total of 12 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.