DOC: Fix heading capitalization in doc/source/whatsnew (pandas-dev#35368

)

doc/source/whatsnew/v0.22.0.rst

@@ -1,7 +1,7 @@
 .. _whatsnew_0220:
 
-v0.22.0 (December 29, 2017)
----------------------------
+Version 0.22.0 (December 29, 2017)
+----------------------------------
 
 {{ header }}
 
@@ -96,7 +96,7 @@ returning ``1`` instead.
 These changes affect :meth:`DataFrame.sum` and :meth:`DataFrame.prod` as well.
 Finally, a few less obvious places in pandas are affected by this change.
 
-Grouping by a categorical
+Grouping by a Categorical
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Grouping by a ``Categorical`` and summing now returns ``0`` instead of

doc/source/whatsnew/v0.23.0.rst

@@ -86,8 +86,8 @@ Please note that the string `index` is not supported with the round trip format,
 .. _whatsnew_0230.enhancements.assign_dependent:
 
 
-``.assign()`` accepts dependent arguments
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Method ``.assign()`` accepts dependent arguments
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The :func:`DataFrame.assign` now accepts dependent keyword arguments for python version later than 3.6 (see also `PEP 468
 <https://www.python.org/dev/peps/pep-0468/>`_). Later keyword arguments may now refer to earlier ones if the argument is a callable. See the
@@ -244,7 +244,7 @@ documentation. If you build an extension array, publicize it on our
 
 .. _whatsnew_0230.enhancements.categorical_grouping:
 
-New ``observed`` keyword for excluding unobserved categories in ``groupby``
+New ``observed`` keyword for excluding unobserved categories in ``GroupBy``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Grouping by a categorical includes the unobserved categories in the output.
@@ -360,8 +360,8 @@ Fill all consecutive outside values in both directions
 
 .. _whatsnew_0210.enhancements.get_dummies_dtype:
 
-``get_dummies`` now supports ``dtype`` argument
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Function ``get_dummies`` now supports ``dtype`` argument
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The :func:`get_dummies` now accepts a ``dtype`` argument, which specifies a dtype for the new columns. The default remains uint8. (:issue:`18330`)
 
@@ -388,8 +388,8 @@ See the :ref:`documentation here <timedeltas.mod_divmod>`. (:issue:`19365`)
 
 .. _whatsnew_0230.enhancements.ran_inf:
 
-``.rank()`` handles ``inf`` values when ``NaN`` are present
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Method ``.rank()`` handles ``inf`` values when ``NaN`` are present
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 In previous versions, ``.rank()`` would assign ``inf`` elements ``NaN`` as their ranks. Now ranks are calculated properly. (:issue:`6945`)
 
@@ -587,7 +587,7 @@ If installed, we now require:
 
 .. _whatsnew_0230.api_breaking.dict_insertion_order:
 
-Instantiation from dicts preserves dict insertion order for python 3.6+
+Instantiation from dicts preserves dict insertion order for Python 3.6+
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Until Python 3.6, dicts in Python had no formally defined ordering. For Python
@@ -1365,8 +1365,8 @@ MultiIndex
 - Bug in indexing where nested indexers having only numpy arrays are handled incorrectly (:issue:`19686`)
 
 
-I/O
-^^^
+IO
+^^
 
 - :func:`read_html` now rewinds seekable IO objects after parse failure, before attempting to parse with a new parser. If a parser errors and the object is non-seekable, an informative error is raised suggesting the use of a different parser (:issue:`17975`)
 - :meth:`DataFrame.to_html` now has an option to add an id to the leading `<table>` tag (:issue:`8496`)
@@ -1403,7 +1403,7 @@ Plotting
 - :func:`DataFrame.plot` now supports multiple columns to the ``y`` argument (:issue:`19699`)
 
 
-Groupby/resample/rolling
+GroupBy/resample/rolling
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 - Bug when grouping by a single column and aggregating with a class like ``list`` or ``tuple`` (:issue:`18079`)

doc/source/whatsnew/v0.24.0.rst

@@ -277,8 +277,8 @@ For earlier versions this can be done using the following.
 
 .. _whatsnew_0240.enhancements.read_html:
 
-``read_html`` Enhancements
-^^^^^^^^^^^^^^^^^^^^^^^^^^
+Function ``read_html`` enhancements
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 :func:`read_html` previously ignored ``colspan`` and ``rowspan`` attributes.
 Now it understands them, treating them as sequences of cells with the same
@@ -1371,7 +1371,7 @@ the object's ``freq`` attribute (:issue:`21939`, :issue:`23878`).
 
 .. _whatsnew_0240.deprecations.integer_tz:
 
-Passing integer data and a timezone to datetimeindex
+Passing integer data and a timezone to DatetimeIndex
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 The behavior of :class:`DatetimeIndex` when passed integer data and
@@ -1769,8 +1769,8 @@ MultiIndex
 - :class:`MultiIndex` has gained the :meth:`MultiIndex.from_frame`, it allows constructing a :class:`MultiIndex` object from a :class:`DataFrame` (:issue:`22420`)
 - Fix ``TypeError`` in Python 3 when creating :class:`MultiIndex` in which some levels have mixed types, e.g. when some labels are tuples (:issue:`15457`)
 
-I/O
-^^^
+IO
+^^
 
 - Bug in :func:`read_csv` in which a column specified with ``CategoricalDtype`` of boolean categories was not being correctly coerced from string values to booleans (:issue:`20498`)
 - Bug in :func:`read_csv` in which unicode column names were not being properly recognized with Python 2.x (:issue:`13253`)
@@ -1827,7 +1827,7 @@ Plotting
 - Bug in :func:`DataFrame.plot.bar` caused bars to use multiple colors instead of a single one (:issue:`20585`)
 - Bug in validating color parameter caused extra color to be appended to the given color array. This happened to multiple plotting functions using matplotlib. (:issue:`20726`)
 
-Groupby/resample/rolling
+GroupBy/resample/rolling
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 - Bug in :func:`pandas.core.window.Rolling.min` and :func:`pandas.core.window.Rolling.max` with ``closed='left'``, a datetime-like index and only one entry in the series leading to segfault (:issue:`24718`)

doc/source/whatsnew/v0.24.2.rst

@@ -51,7 +51,6 @@ Bug fixes
 
 - Bug where calling :meth:`Series.replace` on categorical data could return a ``Series`` with incorrect dimensions (:issue:`24971`)
 -
--
 
 **Reshaping**
 

scripts/validate_rst_title_capitalization.py

@@ -138,6 +138,9 @@
     "CategoricalDtype",
     "UTC",
     "Panel",
+    "False",
+    "Styler",
+    "os",
 }
 
 CAP_EXCEPTIONS_DICT = {word.lower(): word for word in CAPITALIZATION_EXCEPTIONS}