Expand Up @@ -479,6 +479,17 @@ begins. (Contributed by Barry Warsaw in :issue:`31389`.) pdb command line now accepts `-m module_name` as an alternative to script file. (Contributed by Mario Corchero in :issue:`32206`.)
py_compile ----------
:func:`py_compile.compile` -- and by extension, :mod:`compileall` -- now respects the :envvar:`SOURCE_DATE_EPOCH` environment variable by unconditionally creating ``.pyc`` files for hash-based validation. This allows for guaranteeing `reproducible builds <https://reproducible-builds.org/>`_ of ``.pyc`` files when they are created eagerly. (Contributed by Bernhard M. Wiedemann in :issue:`29708`.)

re -- Expand Down Expand Up @@ -544,6 +555,12 @@ Added functions :func:`time.thread_time` and :func:`time.thread_time_ns` to get per-thread CPU time measurements. (Contributed by Antoine Pitrou in :issue:`32025`.)
unicodedata -----------
The internal :mod:`unicodedata` database has been upgraded to use `Unicode 10 <http://www.unicode.org/versions/Unicode10.0.0/>`_. (Contributed by Benjamin Peterson.)
unittest -------- Expand All @@ -565,20 +582,6 @@ children by preventing to get or set any new attribute on the sealed mock. The sealing process is performed recursively. (Contributed by Mario Corchero in :issue:`30541`.)
xmlrpc.server -------------
:meth:`register_function` of :class:`xmlrpc.server.SimpleXMLRPCDispatcher` and its subclasses can be used as a decorator. (Contributed by Xiang Zhang in :issue:`7769`.)
unicodedata -----------
The internal :mod:`unicodedata` database has been upgraded to use `Unicode 10 <http://www.unicode.org/versions/Unicode10.0.0/>`_. (Contributed by Benjamin Peterson.)
urllib.parse ------------
Expand Down Expand Up @@ -624,6 +627,13 @@ methods can now compare text of the current node with ``[. = "text"]``, not only text in children. Predicates also allow adding spaces for better readability. (Contributed by Stefan Behnel in :issue:`31648`.)
xmlrpc.server -------------
:meth:`register_function` of :class:`xmlrpc.server.SimpleXMLRPCDispatcher` and its subclasses can be used as a decorator. (Contributed by Xiang Zhang in :issue:`7769`.)
zipapp ------
Expand Down Expand Up @@ -680,10 +690,16 @@ Optimizations Build and C API Changes =======================
* :mod:`py_compile` and :mod:`compileall` now support the :envvar:`SOURCE_DATE_EPOCH` environment variable by unconditionally building ``.pyc`` files for hash verification instead of potentially timestamp-based ``.pyc`` files. See the notes for the `py_compile`_ improvement notes for more details.
* A full copy of libffi is no longer bundled for use when building the :mod:`_ctypes <ctypes>` module on non-OSX UNIX platforms. An installed copy of libffi is now required when building ``_ctypes`` on such platforms. Contributed by Zachary Ware in :issue:`27979`. (Contributed by Zachary Ware in :issue:`27979`.)
* The fields :c:member:`name` and :c:member:`doc` of structures :c:type:`PyMemberDef`, :c:type:`PyGetSetDef`, Expand Down