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Sep 29, 2013
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DOC: make experimental functionality more visible in release notes #5037

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30 changes: 15 additions & 15 deletions doc/source/release.rst
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Expand Up @@ -60,6 +60,21 @@ New features
- Clipboard functionality now works with PySide (:issue:`4282`)
- New ``extract`` string method returns regex matches more conveniently (:issue:`4685`)

Experimental Features
~~~~~~~~~~~~~~~~~~~~~

- The new :func:`~pandas.eval` function implements expression evaluation using
``numexpr`` behind the scenes. This results in large speedups for complicated
expressions involving large DataFrames/Series.
- :class:`~pandas.DataFrame` has a new :meth:`~pandas.DataFrame.eval` that
evaluates an expression in the context of the ``DataFrame``.
- A :meth:`~pandas.DataFrame.query` method has been added that allows
you to select elements of a ``DataFrame`` using a natural query syntax nearly
identical to Python syntax.
- ``pd.eval`` and friends now evaluate operations involving ``datetime64``
objects in Python space because ``numexpr`` cannot handle ``NaT`` values
(:issue:`4897`).

Improvements to existing features
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Expand Down Expand Up @@ -327,21 +342,6 @@ See :ref:`Internal Refactoring<whatsnew_0130.refactoring>`
- Complex compat for ``Series`` with ``ndarray``. (:issue:`4819`)
- Removed unnecessary ``rwproperty`` from codebase in favor of builtin property. (:issue:`4843`)

Experimental Features
~~~~~~~~~~~~~~~~~~~~~

- The new :func:`~pandas.eval` function implements expression evaluation using
``numexpr`` behind the scenes. This results in large speedups for complicated
expressions involving large DataFrames/Series.
- :class:`~pandas.DataFrame` has a new :meth:`~pandas.DataFrame.eval` that
evaluates an expression in the context of the ``DataFrame``.
- A :meth:`~pandas.DataFrame.query` method has been added that allows
you to select elements of a ``DataFrame`` using a natural query syntax nearly
identical to Python syntax.
- ``pd.eval`` and friends now evaluate operations involving ``datetime64``
objects in Python space because ``numexpr`` cannot handle ``NaT`` values
(:issue:`4897`).

.. _release.bug_fixes-0.13.0:


Expand Down