http://mail.python.org/pipermail/python-dev/2010-September/103408.html

values (http://bugs.python.org/issue7005)
(merged r84443 from the release27-mmaint branch, with changes to reflect
changes in Python 3)

dict_items views.  The method is required by the collections.Set ABC,
which the views register as supporting.

a memoryview object.

frombytes() and tobytes(), respectively, to avoid confusion.  Furthermore,
array.frombytes(), array.extend() as well as the array.array()
constructor now accept bytearray objects.  Patch by Thomas Jollans.

Inline its value in PyUnicode_GetDefaultEncoding(). The comment is now outdated
(we will not change its value anymore).

Issue #9693 - msg 115273: attempt to fix ssl module failures on certain OpenSSL versions by calling ERR_clear_error() before raising IOError

are now removed, since their effect was inexistent in 3.x (the default
encoding is hardcoded to utf-8 and cannot be changed).

properly.  Patch by Stefan Behnel.

_Py_add_one_to_C() and _Py_add_one_to_F(), respectively.