What’s new in 2.3.0 (Month XX, 2024)#

These are the changes in pandas 2.3.0. See Release notes for a full changelog including other versions of pandas.

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 (GH 57739)
The sum() reduction is now implemented for StringDtype columns (GH 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 str.contains(), str.startswith(), and str.endswith() for dtypes that do not already disallow these (GH 59615)
Deprecated the "pyarrow_numpy" storage option for StringDtype (GH 60152)

Performance improvements#

Bug fixes#

Categorical#

Datetimelike#

Timedelta#

Timezones#

Numeric#

Conversion#

Strings#

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

Interval#

Indexing#

Fixed bug in Index.get_indexer() round-tripping through string dtype when infer_string is enabled (GH 55834)

Missing#

MultiIndex#

I/O#

DataFrame.to_excel() was storing decimals as strings instead of numbers (GH 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 (GH 60196)

Contributors#