What’s new in 2.3.0 (June 4, 2025) — pandas 3.0.0.dev0+2198.g4d67bb29ed documentation (original) (raw)

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

Enhancements#

pandas.api.interchange.from_dataframe() now uses the PyCapsule Interface if available, only falling back to the Dataframe Interchange Protocol if that fails (GH 60739)
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)
Series.str.decode() result now has StringDtype when future.infer_string is True (GH 60709)
to_hdf() and to_hdf() now round-trip with StringDtype (GH 60663)
Improved repr of NumpyExtensionArray to account for NEP51 (GH 61085)
The Series.str.decode() has gained the argument dtype to control the dtype of the result (GH 60940)
The cumsum(), cummin(), and cummax() reductions are now implemented for StringDtype columns (GH 60633)
The sum() reduction is now implemented for StringDtype columns (GH 59853)

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)

Bug in Series.mode() and DataFrame.mode() with dropna=False where not all dtypes would sort in the presence of NA values (GH 60702)
Bug in Series.round() where a TypeError would always raise with object dtype (GH 61206)

Bug in Series.__pos__() and DataFrame.__pos__() where an Exception was not raised for StringDtype with storage="pyarrow" (GH 60710)
Bug in Series.rank() for StringDtype with storage="pyarrow" that incorrectly returned integer results with method="average" and raised 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.center() with StringDtype with storage="pyarrow" not matching the python behavior in corner cases with an odd number of fill characters (GH 54792)
Bug in Series.str.replace() when n < 0 for StringDtype with storage="pyarrow" (GH 59628)
Bug in Series.str.slice() with negative step with ArrowDtype and StringDtype with storage="pyarrow" giving incorrect results (GH 59710)

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

Bug in DataFrame.to_excel() which stored decimals as strings instead of numbers (GH 49598)

Fixed usage of inspect when the optional dependencies pyarrow or jinja2are not installed (GH 60196)

A total of 24 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.