because the :class:`memoryview` API is similar but not exactly the same as
that of :class:`buffer`.
-.. 2to3fixer:: callable
-
- Converts ``callable(x)`` to ``isinstance(x, collections.Callable)``, adding
- an import to :mod:`collections` if needed. Note ``callable(x)`` has returned
- in Python 3.2, so if you do not intend to support Python 3.1, you can disable
- this fixer.
-
.. 2to3fixer:: dict
Fixes dictionary iteration methods. :meth:`dict.iteritems` is converted to