What's new in 2.3.0 (Month XX, 2024)

These are the changes in pandas 2.3.0. See :ref:`release` for a full changelog including other versions of pandas.

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Upcoming changes in pandas 3.0

Enhancements

enhancement1

Other enhancements

The semantics for the copy keyword in __array__ methods (i.e. called when using np.array() or np.asarray() on pandas objects) has been updated to work correctly with NumPy >= 2 (:issue:`57739`)
The :meth:`~Series.sum` reduction is now implemented for StringDtype columns (:issue:`59853`)

Notable bug fixes

These are bug fixes that might have notable behavior changes.

notable_bug_fix1

Deprecations

Deprecated allowing non-bool values for na in :meth:`.str.contains`, :meth:`.str.startswith`, and :meth:`.str.endswith` for dtypes that do not already disallow these (:issue:`59615`)
Deprecated the "pyarrow_numpy" storage option for :class:`StringDtype` (:issue:`60152`)

Performance improvements

Bug fixes

Categorical

Datetimelike

Timedelta

Timezones

Numeric

Conversion

Strings

Bug in :meth:`Series.rank` for :class:`StringDtype` with storage="pyarrow" incorrectly returning integer results in case of method="average" and raising an error if it would truncate results (:issue:`59768`)
Bug in :meth:`Series.replace` with :class:`StringDtype` when replacing with a non-string value was not upcasting to object dtype (:issue:`60282`)
Bug in :meth:`Series.str.replace` when n < 0 for :class:`StringDtype` with storage="pyarrow" (:issue:`59628`)
Bug in ser.str.slice with negative step with :class:`ArrowDtype` and :class:`StringDtype` with storage="pyarrow" giving incorrect results (:issue:`59710`)
Bug in the center method on :class:`Series` and :class:`Index` object str accessors with pyarrow-backed dtype not matching the python behavior in corner cases with an odd number of fill characters (:issue:`54792`)

Interval

Indexing

Missing

MultiIndex

I/O

:meth:`DataFrame.to_excel` was storing decimals as strings instead of numbers (:issue:`49598`)

Period

Plotting

Groupby/resample/rolling

Reshaping

Sparse

ExtensionArray

Styler

Other

Fixed usage of inspect when the optional dependencies pyarrow or jinja2 are not installed (:issue:`60196`)

Contributors