DOC: some cleanup of various whatsnew files

doc/source/whatsnew/v0.13.0.txt

@@ -651,7 +651,7 @@ Enhancements
 
   Additionally, the ``method`` argument to ``interpolate`` has been expanded
   to include ``'nearest', 'zero', 'slinear', 'quadratic', 'cubic',
-  'barycentric', 'krogh', 'piecewise_polynomial', 'pchip', `polynomial`, 'spline'``
+  'barycentric', 'krogh', 'piecewise_polynomial', 'pchip', 'polynomial', 'spline'``
   The new methods require scipy_. Consult the Scipy reference guide_ and documentation_ for more information
   about when the various methods are appropriate. See :ref:`the docs<missing_data.interpolate>`.
 

doc/source/whatsnew/v0.14.0.txt

@@ -998,7 +998,7 @@ Bug Fixes
 - Bug in C parser with ``delim_whitespace=True`` and ``\r``-delimited lines
 - Bug in python parser with explicit multi-index in row following column header (:issue:`6893`)
 - Bug in ``Series.rank`` and ``DataFrame.rank`` that caused small floats (<1e-13) to all receive the same rank (:issue:`6886`)
-- Bug in ``DataFrame.apply`` with functions that used \*args`` or \*\*kwargs and returned
+- Bug in ``DataFrame.apply`` with functions that used ``*args`` or ``**kwargs`` and returned
   an empty result (:issue:`6952`)
 - Bug in sum/mean on 32-bit platforms on overflows (:issue:`6915`)
 - Moved ``Panel.shift`` to ``NDFrame.slice_shift`` and fixed to respect multiple dtypes. (:issue:`6959`)

doc/source/whatsnew/v0.14.1.txt

@@ -229,7 +229,7 @@ Bug Fixes
   :issue:`7409`).
 - Bug where bool objects were converted to ``nan`` in ``convert_objects``
   (:issue:`7416`).
-- Bug in ``quantile`` ignoring the axis keyword argument (:issue`7306`)
+- Bug in ``quantile`` ignoring the axis keyword argument (:issue:`7306`)
 - Bug where ``nanops._maybe_null_out`` doesn't work with complex numbers
   (:issue:`7353`)
 - Bug in several ``nanops`` functions when ``axis==0`` for

doc/source/whatsnew/v0.15.0.txt

@@ -983,7 +983,7 @@ Other:
 
     df.describe(include='all')
 
-  Without those arguments, 'describe` will behave as before, including only numerical columns or, if none are, only categorical columns. See also the :ref:`docs <basics.describe>`
+  Without those arguments, ``describe`` will behave as before, including only numerical columns or, if none are, only categorical columns. See also the :ref:`docs <basics.describe>`
 
 - Added ``split`` as an option to the ``orient`` argument in ``pd.DataFrame.to_dict``. (:issue:`7840`)
 

doc/source/whatsnew/v0.15.1.txt

@@ -287,7 +287,7 @@ Bug Fixes
 - Bug in ``Categorical`` reflected comparison operator raising if the first argument was a numpy array scalar (e.g. np.int64) (:issue:`8658`)
 - Bug in Panel indexing with a list-like (:issue:`8710`)
 - Compat issue is ``DataFrame.dtypes`` when ``options.mode.use_inf_as_null`` is True (:issue:`8722`)
-- Bug in ``read_csv``, ``dialect`` parameter would not take a string (:issue: `8703`)
+- Bug in ``read_csv``, ``dialect`` parameter would not take a string (:issue:`8703`)
 - Bug in slicing a multi-index level with an empty-list (:issue:`8737`)
 - Bug in numeric index operations of add/sub with Float/Index Index with numpy arrays (:issue:`8608`)
 - Bug in setitem with empty indexer and unwanted coercion of dtypes (:issue:`8669`)

doc/source/whatsnew/v0.16.2.txt

@@ -163,5 +163,5 @@ Bug Fixes
 - Bug in ``Panel.apply`` when the result has ndim=0 (:issue:`10332`)
 - Bug in ``read_hdf`` where ``auto_close`` could not be passed (:issue:`9327`).
 - Bug in ``read_hdf`` where open stores could not be used (:issue:`10330`).
-- Bug in adding empty ``DataFrame``s, now results in a ``DataFrame`` that ``.equals`` an empty ``DataFrame`` (:issue:`10181`).
+- Bug in adding empty ``DataFrames``, now results in a ``DataFrame`` that ``.equals`` an empty ``DataFrame`` (:issue:`10181`).
 - Bug in ``to_hdf`` and ``HDFStore`` which did not check that complib choices were valid (:issue:`4582`, :issue:`8874`).

doc/source/whatsnew/v0.17.0.txt

@@ -1043,7 +1043,7 @@ Bug Fixes
 ~~~~~~~~~
 
 - Bug in incorrection computation of ``.mean()`` on ``timedelta64[ns]`` because of overflow (:issue:`9442`)
-- Bug in  ``.isin`` on older numpies (:issue: `11232`)
+- Bug in  ``.isin`` on older numpies (:issue:`11232`)
 - Bug in ``DataFrame.to_html(index=False)`` renders unnecessary ``name`` row (:issue:`10344`)
 - Bug in ``DataFrame.to_latex()`` the ``column_format`` argument could not be passed (:issue:`9402`)
 - Bug in ``DatetimeIndex`` when localizing with ``NaT`` (:issue:`10477`)
@@ -1094,7 +1094,7 @@ Bug Fixes
 
 
 - Bug in ``to_datetime`` and ``to_timedelta`` causing ``Index`` name to be lost (:issue:`10875`)
-- Bug in ``len(DataFrame.groupby)`` causing ``IndexError`` when there's a column containing only NaNs (:issue: `11016`)
+- Bug in ``len(DataFrame.groupby)`` causing ``IndexError`` when there's a column containing only NaNs (:issue:`11016`)
 
 - Bug that caused segfault when resampling an empty Series (:issue:`10228`)
 - Bug in ``DatetimeIndex`` and ``PeriodIndex.value_counts`` resets name from its result, but retains in result's ``Index``. (:issue:`10150`)

doc/source/whatsnew/v0.19.0.txt

@@ -265,7 +265,7 @@ Individual columns can be parsed as a ``Categorical`` using a dict specification
 Categorical Concatenation
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-- A function :func:`union_categoricals` has been added for combining categoricals, see :ref:`Unioning Categoricals<categorical.union>` (:issue:`13361`, :issue:`:13763`, issue:`13846`, :issue:`14173`)
+- A function :func:`union_categoricals` has been added for combining categoricals, see :ref:`Unioning Categoricals<categorical.union>` (:issue:`13361`, :issue:`13763`, :issue:`13846`, :issue:`14173`)
 
   .. ipython:: python
 
@@ -1525,7 +1525,7 @@ Bug Fixes
 - Bug in invalid datetime parsing in ``to_datetime`` and ``DatetimeIndex`` may raise ``TypeError`` rather than ``ValueError`` (:issue:`11169`, :issue:`11287`)
 - Bug in ``Index`` created with tz-aware ``Timestamp`` and mismatched ``tz`` option incorrectly coerces timezone (:issue:`13692`)
 - Bug in ``DatetimeIndex`` with nanosecond frequency does not include timestamp specified with ``end`` (:issue:`13672`)
-- Bug in ```Series``` when setting a slice with a ```np.timedelta64``` (:issue:`14155`)
+- Bug in ```Series`` when setting a slice with a ``np.timedelta64`` (:issue:`14155`)
 - Bug in ``Index`` raises ``OutOfBoundsDatetime`` if ``datetime`` exceeds ``datetime64[ns]`` bounds, rather than coercing to ``object`` dtype (:issue:`13663`)
 - Bug in ``Index`` may ignore specified ``datetime64`` or ``timedelta64`` passed as ``dtype``  (:issue:`13981`)
 - Bug in ``RangeIndex`` can be created without no arguments rather than raises ``TypeError`` (:issue:`13793`)

doc/source/whatsnew/v0.19.1.txt

@@ -55,7 +55,7 @@ Bug Fixes
 - Bug in ``pd.concat`` with dataframes heterogeneous in length and tuple ``keys`` (:issue:`14438`)
 - Bug in ``MultiIndex.set_levels`` where illegal level values were still set after raising an error (:issue:`13754`)
 - Bug in ``DataFrame.to_json`` where ``lines=True`` and a value contained a ``}`` character (:issue:`14391`)
-- Bug in ``df.groupby`` causing an ``AttributeError`` when grouping a single index frame by a column and the index level (:issue`14327`)
+- Bug in ``df.groupby`` causing an ``AttributeError`` when grouping a single index frame by a column and the index level (:issue:`14327`)
 - Bug in ``df.groupby`` where ``TypeError`` raised when ``pd.Grouper(key=...)`` is passed in a list (:issue:`14334`)
 - Bug in ``pd.pivot_table`` may raise ``TypeError`` or ``ValueError`` when ``index`` or ``columns``
   is not scalar and ``values`` is not specified (:issue:`14380`)

doc/source/whatsnew/v0.20.0.txt

@@ -1711,7 +1711,7 @@ Reshaping
 - Bug in ``pd.concat()`` in which concatenating with an empty dataframe with ``join='inner'`` was being improperly handled (:issue:`15328`)
 - Bug with ``sort=True`` in ``DataFrame.join`` and ``pd.merge`` when joining on indexes (:issue:`15582`)
 - Bug in ``DataFrame.nsmallest`` and ``DataFrame.nlargest`` where identical values resulted in duplicated rows (:issue:`15297`)
-- Bug in :func:`pandas.pivot_table` incorrectly raising ``UnicodeError`` when passing unicode input for ```margins`` keyword (:issue:`13292`)
+- Bug in :func:`pandas.pivot_table` incorrectly raising ``UnicodeError`` when passing unicode input for ``margins`` keyword (:issue:`13292`)
 
 Numeric
 ^^^^^^^

doc/source/whatsnew/v0.20.2.txt

@@ -44,7 +44,7 @@ Bug Fixes
 - Silenced a warning on some Windows environments about "tput: terminal attributes: No such device or address" when
   detecting the terminal size. This fix only applies to python 3 (:issue:`16496`)
 - Bug in using ``pathlib.Path`` or ``py.path.local`` objects with io functions (:issue:`16291`)
-- Bug in ``Index.symmetric_difference()`` on two equal MultiIndex's, results in a ``TypeError`` (:issue `13490`)
+- Bug in ``Index.symmetric_difference()`` on two equal MultiIndex's, results in a ``TypeError`` (:issue:`13490`)
 - Bug in ``DataFrame.update()`` with ``overwrite=False`` and ``NaN values`` (:issue:`15593`)
 - Passing an invalid engine to :func:`read_csv` now raises an informative
   ``ValueError`` rather than ``UnboundLocalError``. (:issue:`16511`)
@@ -83,7 +83,7 @@ Plotting
 ^^^^^^^^
 
 - Bug in ``DataFrame.plot`` with a single column and a list-like ``color`` (:issue:`3486`)
-- Bug in ``plot`` where ``NaT`` in ``DatetimeIndex`` results in ``Timestamp.min`` (:issue: `12405`)
+- Bug in ``plot`` where ``NaT`` in ``DatetimeIndex`` results in ``Timestamp.min`` (:issue:`12405`)
 - Bug in ``DataFrame.boxplot`` where ``figsize`` keyword was not respected for non-grouped boxplots (:issue:`11959`)
 
 

doc/source/whatsnew/v0.21.0.txt

@@ -895,7 +895,7 @@ nicely format the x-axis for ``DatetimeIndex`` or ``PeriodIndex`` values. You
 must explicitly register these methods:
 
 Pandas built-in ``Series.plot`` and ``DataFrame.plot`` *will* register these
-converters on first-use (:issue:17710).
+converters on first-use (:issue:`17710`).
 
 .. note::
 
@@ -1047,7 +1047,7 @@ Conversion
 - Bug in :attr:`Timestamp.weekday_name` returning a UTC-based weekday name when localized to a timezone (:issue:`17354`)
 - Bug in ``Timestamp.replace`` when replacing ``tzinfo`` around DST changes (:issue:`15683`)
 - Bug in ``Timedelta`` construction and arithmetic that would not propagate the ``Overflow`` exception (:issue:`17367`)
-- Bug in :meth:`~DataFrame.astype` converting to object dtype when passed extension type classes (`DatetimeTZDtype``, ``CategoricalDtype``) rather than instances. Now a ``TypeError`` is raised when a class is passed (:issue:`17780`).
+- Bug in :meth:`~DataFrame.astype` converting to object dtype when passed extension type classes (``DatetimeTZDtype``, ``CategoricalDtype``) rather than instances. Now a ``TypeError`` is raised when a class is passed (:issue:`17780`).
 - Bug in :meth:`to_numeric` in which elements were not always being coerced to numeric when ``errors='coerce'`` (:issue:`17007`, :issue:`17125`)
 - Bug in ``DataFrame`` and ``Series`` constructors where ``range`` objects are converted to ``int32`` dtype on Windows instead of ``int64`` (:issue:`16804`)
 

doc/source/whatsnew/v0.21.1.txt

@@ -81,7 +81,7 @@ Deprecations
 ~~~~~~~~~~~~
 
 - ``pandas.tseries.register`` has been renamed to
-  :func:`pandas.plotting.register_matplotlib_converters`` (:issue:`18301`)
+  :func:`pandas.plotting.register_matplotlib_converters` (:issue:`18301`)
 
 .. _whatsnew_0211.performance:
 
@@ -101,7 +101,7 @@ Conversion
 - Bug in :class:`TimedeltaIndex` subtraction could incorrectly overflow when ``NaT`` is present (:issue:`17791`)
 - Bug in :class:`DatetimeIndex` subtracting datetimelike from DatetimeIndex could fail to overflow (:issue:`18020`)
 - Bug in :meth:`IntervalIndex.copy` when copying and ``IntervalIndex`` with non-default ``closed`` (:issue:`18339`)
-- Bug in :func:`DataFrame.to_dict` where columns of datetime that are tz-aware were not converted to required arrays when used with ``orient='records'``, raising``TypeError` (:issue:`18372`)
+- Bug in :func:`DataFrame.to_dict` where columns of datetime that are tz-aware were not converted to required arrays when used with ``orient='records'``, raising ``TypeError`` (:issue:`18372`)
 - Bug in :class:`DateTimeIndex` and :meth:`date_range` where mismatching tz-aware ``start`` and ``end`` timezones would not raise an err if ``end.tzinfo`` is None (:issue:`18431`)
 - Bug in :meth:`Series.fillna` which raised when passed a long integer on Python 2 (:issue:`18159`).
 

doc/source/whatsnew/v0.23.0.txt

@@ -569,10 +569,10 @@ Previous Behavior (and current behavior if on Python < 3.6):
 
 .. code-block:: ipython
 
-   In [1]: pd.Series({'Income': 2000,
-                      'Expenses': -1500,
-                      'Taxes': -200,
-                      'Net result': 300})
+   pd.Series({'Income': 2000,
+              'Expenses': -1500,
+              'Taxes': -200,
+              'Net result': 300})
    Expenses     -1500
    Income        2000
    Net result     300

doc/source/whatsnew/v0.8.0.txt

@@ -123,7 +123,7 @@ Other new features
 - Enhanced :ref:`read_csv/read_table <io.parse_dates>` for reading time series
   data and converting multiple columns to dates
 - Add :ref:`comments <io.comments>` option to parser functions: read_csv, etc.
-- Add :ref`dayfirst <io.dayfirst>` option to parser functions for parsing
+- Add :ref:`dayfirst <io.dayfirst>` option to parser functions for parsing
   international DD/MM/YYYY dates
 - Allow the user to specify the CSV reader :ref:`dialect <io.dialect>` to
   control quoting etc.