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 DataFrameGroupBy.quantile() (GH 28113).
Bug in GroupBy.shift(), GroupBy.bfill() and 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#

For contributors, please see /usr/share/doc/contributors_list.txt or https://github.com/pandas-dev/pandas/graphs/contributors