v0.23.5.txt

.. _whatsnew_0235:

v0.23.5 (TBD 0, 2018)
---------------------

This is a minor bug-fix release in the 0.23.x series and includes some small regression fixes
and bug fixes. We recommend that all users upgrade to this version.

.. warning::

   Starting January 1, 2019, pandas feature releases will support Python 3 only.
   See :ref:`install.dropping-27` for more.

.. contents:: What's new in v0.23.5
    :local:
    :backlinks: none

.. _whatsnew_0235.fixed_regressions:

Fixed Regressions
~~~~~~~~~~~~~~~~~

- Constructing a DataFrame with an index argument that wasn't already an
  instance of :class:`~pandas.core.Index` was broken in `4efb39f
  <https://github.com/pandas-dev/pandas/commit/4efb39f01f5880122fa38d91e12d217ef70fad9e>`_ (:issue:`22227`).
- Calling :meth:`DataFrameGroupBy.rank` and :meth:`SeriesGroupBy.rank` with empty groups
  and ``pct=True`` was raising a ``ZeroDivisionError`` due to `c1068d9
  <https://github.com/pandas-dev/pandas/commit/c1068d9d242c22cb2199156f6fb82eb5759178ae>`_ (:issue:`22519`)
-
-


Development
~~~~~~~~~~~
- The minimum required pytest version has been increased to 3.6 (:issue:`22319`)

.. _whatsnew_0235.bug_fixes:

Bug Fixes
~~~~~~~~~

**Groupby/Resample/Rolling**

- Bug in :meth:`DataFrame.resample` when resampling ``NaT`` in ``TimeDeltaIndex`` (:issue:`13223`).

**Missing**

-
-

**I/O**

- Bug in :func:`read_csv` that caused it to raise ``OverflowError`` when trying to use 'inf' as ``na_value`` with integer index column (:issue:`17128`)