What’s new in 3.0.1 (February XX, 2026)

These are the changes in pandas 3.0.1. See Release notes for a full changelog including other versions of pandas.

Fixed regressions

• Fixed regression in DataFrame.groupby() and Series.groupby() when grouping on categorical data with NA values, observed=False, and dropna=True (GH 52445)

Bug fixes

• Fixed a bug for comparison operators between range and objects with StringDtype with storage="pyarrow" (GH 63429)

• Fixed a bug in the DataFrame constructor when passed a Series or Index correctly handling Copy-on-Write (GH 63899)

• Allow ExtensionArray to have dtypes involving numpy.void (GH 54810)

• Fixed a bug in col() where unary operators (-, +, abs) were not supported (GH 63939)

Contributors