What's new in 1.5.2 (November ??, 2022)

These are the changes in pandas 1.5.2. See release for a full changelog including other versions of pandas.

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Fixed regressions

Fixed regression in MultiIndex.join for extension array dtypes (49277)
Fixed regression in Series.replace raising RecursionError with numeric dtype and when specifying value=None (45725)
Fixed regression in DataFrame.plot preventing ~matplotlib.colors.Colormap instance from being passed using the colormap argument if Matplotlib 3.6+ is used (49374)
Fixed regression in date_range returning an invalid set of periods for CustomBusinessDay frequency and start date with timezone (49441)
Fixed performance regression in groupby operations (49676)

Bug fixes

Bug in the Copy-on-Write implementation losing track of views in certain chained indexing cases (48996)
Fixed memory leak in .Styler.to_excel (49751)

Other

Reverted color as an alias for c and size as an alias for s in function DataFrame.plot.scatter (49732)

Contributors

v1.5.1..v1.5.2|HEAD