v0.20.3.rst

Version 0.20.3 (July 7, 2017)

{{ header }}

.. ipython:: python
   :suppress:
   :okwarning:

   from pandas import *  # noqa F401, F403

This is a minor bug-fix release in the 0.20.x series and includes some small regression fixes and bug fixes. We recommend that all users upgrade to this version.

What's new in v0.20.3

• Bug fixes
  • Conversion
  • Indexing
  • IO
  • Plotting
  • Reshaping
  • Categorical
• Contributors

Bug fixes

• Fixed a bug in failing to compute rolling computations of a column-MultiIndexed DataFrame (:issue:`16789`, :issue:`16825`)
• Fixed a pytest marker failing downstream packages' tests suites (:issue:`16680`)

Conversion

• Bug in pickle compat prior to the v0.20.x series, when UTC is a timezone in a Series/DataFrame/Index (:issue:`16608`)
• Bug in Series construction when passing a Series with dtype='category' (:issue:`16524`).
• Bug in :meth:`DataFrame.astype` when passing a Series as the dtype kwarg. (:issue:`16717`).

Indexing

• Bug in Float64Index causing an empty array instead of None to be returned from .get(np.nan) on a Series whose index did not contain any NaN s (:issue:`8569`)
• Bug in MultiIndex.isin causing an error when passing an empty iterable (:issue:`16777`)
• Fixed a bug in a slicing DataFrame/Series that have a TimedeltaIndex (:issue:`16637`)

IO

• Bug in :func:`read_csv` in which files weren't opened as binary files by the C engine on Windows, causing EOF characters mid-field, which would fail (:issue:`16039`, :issue:`16559`, :issue:`16675`)
• Bug in :func:`read_hdf` in which reading a Series saved to an HDF file in 'fixed' format fails when an explicit mode='r' argument is supplied (:issue:`16583`)
• Bug in :meth:`DataFrame.to_latex` where bold_rows was wrongly specified to be True by default, whereas in reality row labels remained non-bold whatever parameter provided. (:issue:`16707`)
• Fixed an issue with :meth:`DataFrame.style` where generated element ids were not unique (:issue:`16780`)
• Fixed loading a DataFrame with a PeriodIndex, from a format='fixed' HDFStore, in Python 3, that was written in Python 2 (:issue:`16781`)

Plotting

• Fixed regression that prevented RGB and RGBA tuples from being used as color arguments (:issue:`16233`)
• Fixed an issue with :meth:`DataFrame.plot.scatter` that incorrectly raised a KeyError when categorical data is used for plotting (:issue:`16199`)

Reshaping

• PeriodIndex / TimedeltaIndex.join was missing the sort= kwarg (:issue:`16541`)
• Bug in joining on a MultiIndex with a category dtype for a level (:issue:`16627`).
• Bug in :func:`merge` when merging/joining with multiple categorical columns (:issue:`16767`)

Categorical

• Bug in DataFrame.sort_values not respecting the kind parameter with categorical data (:issue:`16793`)

Contributors

.. contributors:: v0.20.2..v0.20.3