diff -r 9380d67b117a Doc/reference/datamodel.rst
--- a/Doc/reference/datamodel.rst	Mon Jan 02 02:48:26 2017 -0500
+++ b/Doc/reference/datamodel.rst	Tue Jan 03 00:25:16 2017 +0200
@@ -765,7 +765,7 @@
    Special attributes: :attr:`~definition.__name__` is the class name; :attr:`__module__` is
    the module name in which the class was defined; :attr:`~object.__dict__` is the
    dictionary containing the class's namespace; :attr:`~class.__bases__` is a
-   tuple (possibly a singleton) containing the base classes, in the
+   tuple containing the base classes, in the
    order of their occurrence in the base class list; :attr:`__doc__` is the
    class's documentation string, or ``None`` if undefined.