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

These are the changes in pandas 0.25.2. See :ref:`release` for a full changelog including other versions of pandas.

Note

Pandas 0.25.2 adds compatibility for Python 3.8 (:issue:`28147`).

Bug fixes

Indexing

Fix regression in :meth:`DataFrame.reindex` not following the limit argument (:issue:`28631`).
Fix regression in :meth:`RangeIndex.get_indexer` for decreasing :class:`RangeIndex` where target values may be improperly identified as missing/present (:issue:`28678`)

I/O

Fix regression in notebook display where <th> tags were missing for :attr:`DataFrame.index` values (:issue:`28204`).
Regression in :meth:`~DataFrame.to_csv` where writing a :class:`Series` or :class:`DataFrame` indexed by an :class:`IntervalIndex` would incorrectly raise a TypeError (:issue:`28210`)
Fix :meth:`~DataFrame.to_csv` with ExtensionArray with list-like values (:issue:`28840`).

Groupby/resample/rolling

Bug incorrectly raising an IndexError when passing a list of quantiles to :meth:`pandas.core.groupby.DataFrameGroupBy.quantile` (:issue:`28113`).
Bug in :meth:`pandas.core.groupby.GroupBy.shift`, :meth:`pandas.core.groupby.GroupBy.bfill` and :meth:`pandas.core.groupby.GroupBy.ffill` where timezone information would be dropped (:issue:`19995`, :issue:`27992`)

Other

Compatibility with Python 3.8 in :meth:`DataFrame.query` (:issue:`27261`)
Fix to ensure that tab-completion in an IPython console does not raise warnings for deprecated attributes (:issue:`27900`).
Fix :class:`AbstractHolidayCalendar` to return correct results for years after 2030 (now goes up to 2200) (:issue:`27790`)

Contributors

.. contributors:: v0.25.1..HEAD