diff -r 45eab45be175 Lib/collections/__init__.py
--- a/Lib/collections/__init__.py	Mon Nov 21 04:22:43 2016 +0000
+++ b/Lib/collections/__init__.py	Mon Nov 21 09:06:49 2016 +0000
@@ -304,7 +304,7 @@ except ImportError:
 _class_template = """\
 from builtins import property as _property, tuple as _tuple
 from operator import itemgetter as _itemgetter
-from collections import OrderedDict
+from collections import OrderedDict as _OrderedDict
 
 class {typename}(tuple):
     '{typename}({arg_list})'
@@ -338,7 +338,7 @@ class {typename}(tuple):
 
     def _asdict(self):
         'Return a new OrderedDict which maps field names to their values.'
-        return OrderedDict(zip(self._fields, self))
+        return _OrderedDict(zip(self._fields, self))
 
     def __getnewargs__(self):
         'Return self as a plain tuple.  Used by copy and pickle.'
diff -r 45eab45be175 Lib/functools.py
--- a/Lib/functools.py	Mon Nov 21 04:22:43 2016 +0000
+++ b/Lib/functools.py	Mon Nov 21 09:06:49 2016 +0000
@@ -400,7 +400,70 @@ class partialmethod(object):
 ### LRU Cache function decorator
 ################################################################################
 
-_CacheInfo = namedtuple("CacheInfo", ["hits", "misses", "maxsize", "currsize"])
+#/*[python input]
+#from collections import namedtuple
+#CacheInfo = namedtuple("CacheInfo", ["hits", "misses", "maxsize", "currsize"])
+#print(CacheInfo._source)
+#
+#
+#
+#[python start generated code]*/
+from builtins import property as _property, tuple as _tuple
+from operator import itemgetter as _itemgetter
+from collections import OrderedDict as _OrderedDict
+
+class CacheInfo(tuple):
+    'CacheInfo(hits, misses, maxsize, currsize)'
+
+    __slots__ = ()
+
+    _fields = ('hits', 'misses', 'maxsize', 'currsize')
+
+    def __new__(_cls, hits, misses, maxsize, currsize):
+        'Create new instance of CacheInfo(hits, misses, maxsize, currsize)'
+        return _tuple.__new__(_cls, (hits, misses, maxsize, currsize))
+
+    @classmethod
+    def _make(cls, iterable, new=tuple.__new__, len=len):
+        'Make a new CacheInfo object from a sequence or iterable'
+        result = new(cls, iterable)
+        if len(result) != 4:
+            raise TypeError('Expected 4 arguments, got %d' % len(result))
+        return result
+
+    def _replace(_self, **kwds):
+        'Return a new CacheInfo object replacing specified fields with new values'
+        result = _self._make(map(kwds.pop, ('hits', 'misses', 'maxsize', 'currsize'), _self))
+        if kwds:
+            raise ValueError('Got unexpected field names: %r' % list(kwds))
+        return result
+
+    def __repr__(self):
+        'Return a nicely formatted representation string'
+        return self.__class__.__name__ + '(hits=%r, misses=%r, maxsize=%r, currsize=%r)' % self
+
+    def _asdict(self):
+        'Return a new OrderedDict which maps field names to their values.'
+        return _OrderedDict(zip(self._fields, self))
+
+    def __getnewargs__(self):
+        'Return self as a plain tuple.  Used by copy and pickle.'
+        return tuple(self)
+
+    hits = _property(_itemgetter(0), doc='Alias for field number 0')
+
+    misses = _property(_itemgetter(1), doc='Alias for field number 1')
+
+    maxsize = _property(_itemgetter(2), doc='Alias for field number 2')
+
+    currsize = _property(_itemgetter(3), doc='Alias for field number 3')
+
+
+#/*[python end generated code: output=0ed8ce9e3e1b7598 input=ee2c7664bc4d78e7]*/
+
+_CacheInfo = CacheInfo
+del CacheInfo
+
 
 class _HashedSeq(list):
     """ This class guarantees that hash() will be called no more than once
diff -r 45eab45be175 Makefile.pre.in
--- a/Makefile.pre.in	Mon Nov 21 04:22:43 2016 +0000
+++ b/Makefile.pre.in	Mon Nov 21 09:06:49 2016 +0000
@@ -560,8 +560,9 @@ coverage-report:
 # Run "Argument Clinic" over all source files
 # (depends on python having already been built)
 .PHONY=clinic
-clinic: $(BUILDPYTHON) $(srcdir)/Modules/_blake2/blake2s_impl.c
+clinic: $(BUILDPYTHON) $(srcdir)/Modules/_blake2/blake2s_impl.c $(srcdir)/Lib/functools.py
 	$(RUNSHARED) $(PYTHON_FOR_BUILD) ./Tools/clinic/clinic.py --make
+	$(RUNSHARED) $(PYTHON_FOR_BUILD) ./Tools/clinic/clinic.py Lib/functools.py
 
 # Build the interpreter
 $(BUILDPYTHON):	Programs/python.o $(LIBRARY) $(LDLIBRARY) $(PY3LIBRARY)
diff -r 45eab45be175 Tools/clinic/clinic.py
--- a/Tools/clinic/clinic.py	Mon Nov 21 04:22:43 2016 +0000
+++ b/Tools/clinic/clinic.py	Mon Nov 21 09:06:49 2016 +0000
@@ -381,7 +381,6 @@ class Language(metaclass=abc.ABCMeta):
     def __init__(self, filename):
         pass
 
-    @abc.abstractmethod
     def render(self, clinic, signatures):
         pass