Index: Doc/library/decimal.rst
===================================================================
--- Doc/library/decimal.rst	(revision 87951)
+++ Doc/library/decimal.rst	(working copy)
@@ -144,7 +144,7 @@
    >>> Decimal((0, (3, 1, 4), -2))
    Decimal('3.14')
    >>> Decimal(str(2.0 ** 0.5))
-   Decimal('1.41421356237')
+   Decimal('1.4142135623730951')
    >>> Decimal(2) ** Decimal('0.5')
    Decimal('1.414213562373095048801688724')
    >>> Decimal('NaN')
Index: Doc/library/difflib.rst
===================================================================
--- Doc/library/difflib.rst	(revision 87951)
+++ Doc/library/difflib.rst	(working copy)
@@ -159,7 +159,7 @@
       >>> s1 = ['bacon\n', 'eggs\n', 'ham\n', 'guido\n']
       >>> s2 = ['python\n', 'eggy\n', 'hamster\n', 'guido\n']
       >>> for line in context_diff(s1, s2, fromfile='before.py', tofile='after.py'):
-      ...     sys.stdout.write(line)  # doctest: +NORMALIZE_WHITESPACE
+      ...     print(line, end='')  # doctest: +NORMALIZE_WHITESPACE
       *** before.py
       --- after.py
       ***************
@@ -197,7 +197,7 @@
       >>> import keyword
       >>> get_close_matches('wheel', keyword.kwlist)
       ['while']
-      >>> get_close_matches('apple', keyword.kwlist)
+      >>> get_close_matches('apple', keyword.kwlist, cutoff=0.7)
       []
       >>> get_close_matches('accept', keyword.kwlist)
       ['except']
@@ -292,7 +292,7 @@
       >>> s1 = ['bacon\n', 'eggs\n', 'ham\n', 'guido\n']
       >>> s2 = ['python\n', 'eggy\n', 'hamster\n', 'guido\n']
       >>> for line in unified_diff(s1, s2, fromfile='before.py', tofile='after.py'):
-      ...     sys.stdout.write(line)   # doctest: +NORMALIZE_WHITESPACE
+      ...     print(line, end='')   # doctest: +NORMALIZE_WHITESPACE
       --- before.py
       +++ after.py
       @@ -1,4 +1,4 @@
Index: Doc/library/turtle.rst
===================================================================
--- Doc/library/turtle.rst	(revision 87951)
+++ Doc/library/turtle.rst	(working copy)
@@ -1878,7 +1878,7 @@
 
       >>> cv = screen.getcanvas()
       >>> cv
-      <turtle.ScrolledCanvas instance at 0x...>
+      <turtle.ScrolledCanvas object at ...>
 
 
 .. function:: getshapes()
Index: Doc/library/collections.rst
===================================================================
--- Doc/library/collections.rst	(revision 87951)
+++ Doc/library/collections.rst	(working copy)
@@ -120,6 +120,7 @@
             >>> c = Counter(a=4, b=2, c=0, d=-2)
             >>> d = Counter(a=1, b=2, c=3, d=4)
             >>> c.subtract(d)
+	    >>> c
             Counter({'a': 3, 'b': 0, 'c': -3, 'd': -6})
 
       .. versionadded:: 3.2
@@ -544,7 +545,7 @@
    ...     d[k].add(v)
    ...
    >>> list(d.items())
-   [('blue', set([2, 4])), ('red', set([1, 3]))]
+   [('blue', {2, 4}), ('red', {1, 3})]
 
 
 :func:`namedtuple` Factory Function for Tuples with Named Fields
@@ -587,7 +588,7 @@
 
 
 .. doctest::
-   :options: +NORMALIZE_WHITESPACE
+   :options: +NORMALIZE_WHITESPACE,+REPORT_UDIFF
 
    >>> # Basic example
    >>> Point = namedtuple('Point', 'x y')
@@ -626,15 +627,16 @@
                'Return a new Point object replacing specified fields with new values'
                result = _self._make(map(kwds.pop, ('x', 'y'), _self))
                if kwds:
-                   raise ValueError('Got unexpected field names: %r' % list(kwds.keys()))
+                   raise ValueError('Got unexpected field names: %r' % kwds.keys())
                return result
    <BLANKLINE>
            def __getnewargs__(self):
-               'Return self as a plain tuple.   Used by copy and pickle.'
+               'Return self as a plain tuple.  Used by copy and pickle.'
                return tuple(self)
    <BLANKLINE>
            x = _property(_itemgetter(0), doc='Alias for field number 0')
            y = _property(_itemgetter(1), doc='Alias for field number 1')
+   <BLANKLINE>
 
    >>> p = Point(11, y=22)     # instantiate with positional or keyword arguments
    >>> p[0] + p[1]             # indexable like the plain tuple (11, 22)
Index: Doc/library/operator.rst
===================================================================
--- Doc/library/operator.rst	(revision 87951)
+++ Doc/library/operator.rst	(working copy)
@@ -9,7 +9,7 @@
 .. testsetup::
 
    import operator
-   from operator import itemgetter
+   from operator import itemgetter, iadd
 
 
 The :mod:`operator` module exports a set of functions implemented in C