Remove trailing whitespace.
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index b12bd7a..f41abd6 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -43,34 +43,34 @@
:class:`Iterator` :class:`Iterable` ``__next__`` ``__iter__``
:class:`Sized` ``__len__``
:class:`Callable` ``__call__``
-
+
:class:`Sequence` :class:`Sized`, ``__getitem__`` ``__contains__``. ``__iter__``, ``__reversed__``.
:class:`Iterable`, and ``__len__`` ``index``, and ``count``
- :class:`Container`
-
+ :class:`Container`
+
:class:`MutableSequence` :class:`Sequence` ``__getitem__`` Inherited Sequence methods and
``__delitem__``, ``append``, ``reverse``, ``extend``, ``pop``,
``insert``, ``remove``, and ``__iadd__``
and ``__len__``
-
+
:class:`Set` :class:`Sized`, ``__len__``, ``__le__``, ``__lt__``, ``__eq__``, ``__ne__``,
:class:`Iterable`, ``__iter__``, and ``__gt__``, ``__ge__``, ``__and__``, ``__or__``
:class:`Container` ``__contains__`` ``__sub__``, ``__xor__``, and ``isdisjoint``
-
+
:class:`MutableSet` :class:`Set` ``add`` and Inherited Set methods and
``discard`` ``clear``, ``pop``, ``remove``, ``__ior__``,
``__iand__``, ``__ixor__``, and ``__isub__``
-
+
:class:`Mapping` :class:`Sized`, ``__getitem__``, ``__contains__``, ``keys``, ``items``, ``values``,
:class:`Iterable`, ``__len__``. and ``get``, ``__eq__``, and ``__ne__``
:class:`Container` ``__iter__``
-
+
:class:`MutableMapping` :class:`Mapping` ``__getitem__`` Inherited Mapping methods and
``__setitem__``, ``pop``, ``popitem``, ``clear``, ``update``,
``__delitem__``, and ``setdefault``
``__iter__``, and
``__len__``
-
+
:class:`MappingView` :class:`Sized` ``__len__``
:class:`KeysView` :class:`MappingView`, ``__contains__``,
:class:`Set` ``__iter__``
@@ -526,8 +526,8 @@
if kwds:
raise ValueError('Got unexpected field names: %r' % kwds.keys())
return result
- <BLANKLINE>
- def __getnewargs__(self):
+ <BLANKLINE>
+ def __getnewargs__(self):
return tuple(self)
<BLANKLINE>
x = property(itemgetter(0))
@@ -674,8 +674,8 @@
:class:`UserDict` objects
-------------------------
-The class, :class:`UserDict` acts as a wrapper around dictionary objects.
-The need for this class has been partially supplanted by the ability to
+The class, :class:`UserDict` acts as a wrapper around dictionary objects.
+The need for this class has been partially supplanted by the ability to
subclass directly from :class:`dict`; however, this class can be easier
to work with because the underlying dictionary is accessible as an
attribute.
@@ -688,7 +688,7 @@
initialized with its contents; note that a reference to *initialdata* will not
be kept, allowing it be used for other purposes.
-In addition to supporting the methods and operations of mappings,
+In addition to supporting the methods and operations of mappings,
:class:`UserDict` instances provide the following attribute:
.. attribute:: UserDict.data
@@ -701,11 +701,11 @@
-------------------------
This class acts as a wrapper around list objects. It is a useful base class
-for your own list-like classes which can inherit from them and override
+for your own list-like classes which can inherit from them and override
existing methods or add new ones. In this way, one can add new behaviors to
lists.
-The need for this class has been partially supplanted by the ability to
+The need for this class has been partially supplanted by the ability to
subclass directly from :class:`list`; however, this class can be easier
to work with because the underlying list is accessible as an attribute.
@@ -717,12 +717,12 @@
defaulting to the empty list ``[]``. *list* can be any iterable, for
example a real Python list or a :class:`UserList` object.
-In addition to supporting the methods and operations of mutable sequences,
+In addition to supporting the methods and operations of mutable sequences,
:class:`UserList` instances provide the following attribute:
.. attribute:: UserList.data
- A real :class:`list` object used to store the contents of the
+ A real :class:`list` object used to store the contents of the
:class:`UserList` class.
**Subclassing requirements:** Subclasses of :class:`UserList` are expect to
@@ -740,8 +740,8 @@
:class:`UserString` objects
---------------------------
-The class, :class:`UserString` acts as a wrapper around string objects.
-The need for this class has been partially supplanted by the ability to
+The class, :class:`UserString` acts as a wrapper around string objects.
+The need for this class has been partially supplanted by the ability to
subclass directly from :class:`str`; however, this class can be easier
to work with because the underlying string is accessible as an
attribute.
@@ -749,8 +749,8 @@
.. class:: UserString([sequence])
Class that simulates a string or a Unicode string object. The instance's
- content is kept in a regular string object, which is accessible via the
- :attr:`data` attribute of :class:`UserString` instances. The instance's
+ content is kept in a regular string object, which is accessible via the
+ :attr:`data` attribute of :class:`UserString` instances. The instance's
contents are initially set to a copy of *sequence*. The *sequence* can
be an instance of :class:`bytes`, :class:`str`, :class:`UserString` (or a
subclass) or an arbitrary sequence which can be converted into a string using