What’s new in 0.25.2 (October 15, 2019)

These are the changes in pandas 0.25.2. See Release notes for a full changelog including other versions of pandas.

Note

pandas 0.25.2 adds compatibility for Python 3.8 (GH 28147).

Bug fixes

Indexing

• Fix regression in DataFrame.reindex() not following the limit argument (GH 28631).

• Fix regression in RangeIndex.get_indexer() for decreasing RangeIndex where target values may be improperly identified as missing/present (GH 28678)

IO

• Fix regression in notebook display where <th> tags were missing for DataFrame.index values (GH 28204).

• Regression in to_csv() where writing a Series or DataFrame indexed by an IntervalIndex would incorrectly raise a TypeError (GH 28210)

• Fix to_csv() with ExtensionArray with list-like values (GH 28840).

GroupBy/resample/rolling

• Bug incorrectly raising an IndexError when passing a list of quantiles to pandas.core.groupby.DataFrameGroupBy.quantile() (GH 28113).

• Bug in pandas.core.groupby.GroupBy.shift(), pandas.core.groupby.GroupBy.bfill() and pandas.core.groupby.GroupBy.ffill() where timezone information would be dropped (GH 19995, GH 27992)

Other

• Compatibility with Python 3.8 in DataFrame.query() (GH 27261)

• Fix to ensure that tab-completion in an IPython console does not raise warnings for deprecated attributes (GH 27900).

Contributors

A total of 6 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.

• Felix Divo +

• Jeremy Schendel

• Joris Van den Bossche

• MeeseeksMachine

• Tom Augspurger

• jbrockmendel