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v0.21.1.txt
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.. _whatsnew_0211:
v0.21.1
-------
This is a minor release from 0.21.1 and includes a number of deprecations, new
features, enhancements, and performance improvements along with a large number
of bug fixes. We recommend that all users upgrade to this version.
.. _whatsnew_0211.enhancements:
New features
~~~~~~~~~~~~
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.. _whatsnew_0211.enhancements.other:
Other Enhancements
^^^^^^^^^^^^^^^^^^
- :meth:`Timestamp.timestamp` is now available in Python 2.7. (:issue:`17329`)
- :func: groupby.is_monotonic_increasing and .is_monotonic_decreasing extend Series.is_monotonic_increasing to groups, returning whether each group is monotonically increasing or decreasing, respectively. (:issue:`17015`)
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.. _whatsnew_0211.deprecations:
Deprecations
~~~~~~~~~~~~
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.. _whatsnew_0211.performance:
Performance Improvements
~~~~~~~~~~~~~~~~~~~~~~~~
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.. _whatsnew_0211.docs:
Documentation Changes
~~~~~~~~~~~~~~~~~~~~~
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.. _whatsnew_0211.bug_fixes:
Bug Fixes
~~~~~~~~~
- Bug in ``DataFrame.resample(...).apply(...)`` when there is a callable that returns different columns (:issue:`15169`)
Conversion
^^^^^^^^^^
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Indexing
^^^^^^^^
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I/O
^^^
- Bug in class:`~pandas.io.stata.StataReader` not converting date/time columns with display formatting addressed (:issue:`17990`). Previously columns with display formatting were normally left as ordinal numbers and not converted to datetime objects.
Plotting
^^^^^^^^
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Groupby/Resample/Rolling
^^^^^^^^^^^^^^^^^^^^^^^^
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Sparse
^^^^^^
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Reshaping
^^^^^^^^^
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Numeric
^^^^^^^
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Categorical
^^^^^^^^^^^
- Bug in :meth:`DataFrame.astype` where casting to 'category' on an empty ``DataFrame`` causes a segmentation fault (:issue:`18004`)
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Other
^^^^^
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