Simplify __base__ attribute explanation

Author: furkanonder

Doc/c-api/object.rst

@@ -392,52 +392,12 @@ Object Protocol
    class, are considered classes.  However, objects can override this by having
    a :attr:`~type.__bases__` attribute (which must be a tuple of base classes).
 
-   Another attribute, ``__base__`` is specific to CPython and also exists in
-   Jython and PyPy.  It can be used on a class inheriting from one or more
-   classes.
-
-   ``__base__`` corresponds to the :c:member:`~PyTypeObject.tp_base` in a
-   type object.  At the C level, Python has a single inheritance model
-   that determines the memory layout of instances.  There is a chain
-   involving base classes that contribute to the instance layout.
-   ``__base__`` is the base class that is involved in that chain.
-   When such a class takes arguments in the correct order, then starting leftmost.
-
-   Let's look at the example cases;
-
-   >>> class A(object): pass
-   ...
-   >>> class B(A): pass
-   ...
-   >>> class C(int): pass
-   ...
-
-   The first user-defined class that either inherits from the instance
-   of a built-in type other than object or inherits from another user
-   defined class (single or multiple inheritance) that does so or in the
-   absence of the above class.
-
-   >>> class D(B, A, C): pass
-   ...
-   >>> D.__base__
-   <class 'C'>
-   >>>
-
-   A built-in type that is not an object or in the absence of the above class.
-
-   >>> class D(B, A, int): pass
-   ...
-   >>> D.__base__
-   <class 'int'>
-
-   The first user defined class that inherits  either an object or
-   derives from a class (directly or indirectly) that inherits an
-   object is the value returned by the ``__base__`` attribute.
-
-   >>> class D(B, A): pass
-   ...
-   >>> D.__base__
-   <class 'B'>
+   Another attribute, ``__base__`` corresponds to the :c:member:`~PyTypeObject.tp_base`
+   in a type object. At the C level, Python has a single inheritance model
+   that determines the memory layout of instances. There is a chain involving
+   base classes that contribute to the instance layout. ``__base__`` is the base
+   class that is involved in that chain. When such a class takes arguments in
+   the correct order, then starting leftmost.
 
    .. impl-detail::
       Note that behavior of the ``__base__`` attribute is dependent on the