diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst
index a75e450..6ad4f7b 100644
--- a/Doc/c-api/buffer.rst
+++ b/Doc/c-api/buffer.rst
@@ -137,7 +137,7 @@
    Return 1 if *obj* supports the buffer interface otherwise 0.
 
 
-.. cfunction:: int PyObject_GetBuffer(PyObject *obj, PyObject *view, int flags)
+.. cfunction:: int PyObject_GetBuffer(PyObject *obj, Py_buffer *view, int flags)
 
       Export *obj* into a :ctype:`Py_buffer`, *view*.  These arguments must
       never be *NULL*.  The *flags* argument is a bit field indicating what
diff --git a/Doc/c-api/sequence.rst b/Doc/c-api/sequence.rst
index 6be9810..d863177 100644
--- a/Doc/c-api/sequence.rst
+++ b/Doc/c-api/sequence.rst
@@ -50,7 +50,7 @@
 
 .. cfunction:: PyObject* PySequence_GetItem(PyObject *o, Py_ssize_t i)
 
-   Return the *i*th element of *o*, or *NULL* on failure. This is the equivalent of
+   Return the *i*\ th element of *o*, or *NULL* on failure. This is the equivalent of
    the Python expression ``o[i]``.
 
 
@@ -62,14 +62,14 @@
 
 .. cfunction:: int PySequence_SetItem(PyObject *o, Py_ssize_t i, PyObject *v)
 
-   Assign object *v* to the *i*th element of *o*.  Returns ``-1`` on failure.  This
+   Assign object *v* to the *i*\ th element of *o*.  Returns ``-1`` on failure.  This
    is the equivalent of the Python statement ``o[i] = v``.  This function *does
    not* steal a reference to *v*.
 
 
 .. cfunction:: int PySequence_DelItem(PyObject *o, Py_ssize_t i)
 
-   Delete the *i*th element of object *o*.  Returns ``-1`` on failure.  This is the
+   Delete the *i*\ th element of object *o*.  Returns ``-1`` on failure.  This is the
    equivalent of the Python statement ``del o[i]``.
 
 
@@ -131,7 +131,7 @@
 
 .. cfunction:: PyObject* PySequence_Fast_GET_ITEM(PyObject *o, Py_ssize_t i)
 
-   Return the *i*th element of *o*, assuming that *o* was returned by
+   Return the *i*\ th element of *o*, assuming that *o* was returned by
    :cfunc:`PySequence_Fast`, *o* is not *NULL*, and that *i* is within bounds.
 
 
@@ -147,7 +147,7 @@
 
 .. cfunction:: PyObject* PySequence_ITEM(PyObject *o, Py_ssize_t i)
 
-   Return the *i*th element of *o* or *NULL* on failure. Macro form of
+   Return the *i*\ th element of *o* or *NULL* on failure. Macro form of
    :cfunc:`PySequence_GetItem` but without checking that
    :cfunc:`PySequence_Check(o)` is true and without adjustment for negative
    indices.
diff --git a/Doc/conf.py b/Doc/conf.py
index 551452b..352c15f 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -46,6 +46,9 @@
     'library/xml.etree',
 ]
 
+# Ignore .rst in Sphinx its self.
+exclude_trees = ['tools/sphinx']
+
 # Relative filename of the reference count data file.
 refcount_file = 'data/refcounts.dat'
 
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index ba80478..039289a 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -1207,8 +1207,7 @@
 Variable-sized data types
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-``ctypes`` provides some support for variable-sized arrays and structures (this
-was added in version 0.9.9.7).
+``ctypes`` provides some support for variable-sized arrays and structures.
 
 The ``resize`` function can be used to resize the memory buffer of an existing
 ctypes object.  The function takes the object as first argument, and the
diff --git a/Doc/library/email-examples.rst b/Doc/library/email-examples.rst
index f606f9b..c1b16da 100644
--- a/Doc/library/email-examples.rst
+++ b/Doc/library/email-examples.rst
@@ -1,3 +1,5 @@
+.. _email-examples:
+
 :mod:`email`: Examples
 ----------------------
 
diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index 7d8e1b3..43fa9b0 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -73,9 +73,9 @@
 
 .. exception:: LookupError
 
-   The base class for the exceptions that are raised when a key or index used on a
-   mapping or sequence is invalid: :exc:`IndexError`, :exc:`KeyError`.  This can be
-   raised directly by :func:`sys.setdefaultencoding`.
+   The base class for the exceptions that are raised when a key or index used on
+   a mapping or sequence is invalid: :exc:`IndexError`, :exc:`KeyError`.  This
+   can be raised directly by :func:`codecs.lookup`.
 
 
 .. exception:: EnvironmentError
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index f0c7195..732dfa2 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -1209,7 +1209,7 @@
       >>> list(zipped)
       [(1, 4), (2, 5), (3, 6)]
       >>> x2, y2 = zip(*zip(x, y))
-      >>> x == x2, y == y2
+      >>> x == list(x2) and y == list(y2)
       True
 
 
@@ -1272,7 +1272,7 @@
    names.
 
    If you simply want to import a module (potentially within a package) by name,
-   you can get it from :data:`sys.modules`::
+   you can call :func:`__import__` and then look it up in :data:`sys.modules`::
 
       >>> import sys
       >>> name = 'foo.bar.baz'
diff --git a/Doc/library/http.client.rst b/Doc/library/http.client.rst
index 8362948..3632242 100644
--- a/Doc/library/http.client.rst
+++ b/Doc/library/http.client.rst
@@ -384,6 +384,8 @@
    Set the debugging level (the amount of debugging output printed). The default
    debug level is ``0``, meaning no debugging output is printed.
 
+   .. versionadded:: 2.7
+
 
 .. method:: HTTPConnection.connect()
 
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 2213740..9bb2fc6 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -386,9 +386,9 @@
    .. note::
 
       This function is intended for low-level I/O and must be applied to a file
-      descriptor as returned by :func:`open` or :func:`pipe`.  To close a "file
+      descriptor as returned by :func:`os.open` or :func:`pipe`.  To close a "file
       object" returned by the built-in function :func:`open` or by :func:`popen` or
-      :func:`fdopen`, use its :meth:`close` method.
+      :func:`fdopen`, use its :meth:`~file.close` method.
 
 
 .. function:: closerange(fd_low, fd_high)
@@ -439,6 +439,9 @@
    Force write of file with filedescriptor *fd* to disk. Does not force update of
    metadata. Availability: Unix.
 
+   .. note::
+      This function is not available on MacOS.
+
 
 .. function:: fpathconf(fd, name)
 
@@ -514,8 +517,8 @@
    .. note::
 
       This function is intended for low-level I/O.  For normal usage, use the built-in
-      function :func:`open`, which returns a "file object" with :meth:`read` and
-      :meth:`write` methods (and many more).  To wrap a file descriptor in a "file
+      function :func:`open`, which returns a "file object" with :meth:`~file.read` and
+      :meth:`~file.write` methods (and many more).  To wrap a file descriptor in a "file
       object", use :func:`fdopen`.
 
 
@@ -544,22 +547,22 @@
    .. note::
 
       This function is intended for low-level I/O and must be applied to a file
-      descriptor as returned by :func:`open` or :func:`pipe`.  To read a "file object"
+      descriptor as returned by :func:`os.open` or :func:`pipe`.  To read a "file object"
       returned by the built-in function :func:`open` or by :func:`popen` or
-      :func:`fdopen`, or :data:`sys.stdin`, use its :meth:`read` or :meth:`readline`
-      methods.
+      :func:`fdopen`, or :data:`sys.stdin`, use its :meth:`~file.read` or
+      :meth:`~file.readline` methods.
 
 
 .. function:: tcgetpgrp(fd)
 
    Return the process group associated with the terminal given by *fd* (an open
-   file descriptor as returned by :func:`open`). Availability: Unix.
+   file descriptor as returned by :func:`os.open`). Availability: Unix.
 
 
 .. function:: tcsetpgrp(fd, pg)
 
    Set the process group associated with the terminal given by *fd* (an open file
-   descriptor as returned by :func:`open`) to *pg*. Availability: Unix.
+   descriptor as returned by :func:`os.open`) to *pg*. Availability: Unix.
 
 
 .. function:: ttyname(fd)
@@ -577,13 +580,13 @@
    .. note::
 
       This function is intended for low-level I/O and must be applied to a file
-      descriptor as returned by :func:`open` or :func:`pipe`.  To write a "file
+      descriptor as returned by :func:`os.open` or :func:`pipe`.  To write a "file
       object" returned by the built-in function :func:`open` or by :func:`popen` or
-      :func:`fdopen`, or :data:`sys.stdout` or :data:`sys.stderr`, use its :meth:`write`
-      method.
+      :func:`fdopen`, or :data:`sys.stdout` or :data:`sys.stderr`, use its
+      :meth:`~file.write` method.
 
 The following constants are options for the *flags* parameter to the
-:func:`open` function.  They can be combined using the bitwise OR operator
+:func:`~os.open` function.  They can be combined using the bitwise OR operator
 ``|``.  Some of them are not available on all platforms.  For descriptions of
 their availability and use, consult the :manpage:`open(2)` manual page on Unix
 or `the MSDN <http://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>` on Windows.
@@ -660,7 +663,7 @@
    .. note::
 
       Using :func:`access` to check if a user is authorized to e.g. open a file before
-      actually doing so using :func:`open` creates a  security hole, because the user
+      actually doing so using :func:`open` creates a security hole, because the user
       might exploit the short time interval  between checking and opening the file to
       manipulate it.
 
diff --git a/Doc/library/rlcompleter.rst b/Doc/library/rlcompleter.rst
index 293160a..6b3befc 100644
--- a/Doc/library/rlcompleter.rst
+++ b/Doc/library/rlcompleter.rst
@@ -52,7 +52,7 @@
 
 .. method:: Completer.complete(text, state)
 
-   Return the *state*th completion for *text*.
+   Return the *state*\ th completion for *text*.
 
    If called for *text* that doesn't include a period character (``'.'``), it will
    complete from names currently defined in :mod:`__main__`, :mod:`builtins` and
diff --git a/Doc/library/smtplib.rst b/Doc/library/smtplib.rst
index 5363120..070220e 100644
--- a/Doc/library/smtplib.rst
+++ b/Doc/library/smtplib.rst
@@ -364,3 +364,8 @@
    server.sendmail(fromaddr, toaddrs, msg)
    server.quit()
 
+.. note::
+
+   In general, you will want to use the :mod:`email` package's features to
+   construct an email message, which you can then convert to a string and send
+   via :meth:`sendmail`; see :ref:`email-examples`.
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index 9853e62..3318d43 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -34,9 +34,12 @@
    Arguments are:
 
    *args* should be a string, or a sequence of program arguments.  The program
-   to execute is normally the first item in the args sequence or the string if a
-   string is given, but can be explicitly set by using the *executable*
-   argument.
+   to execute is normally the first item in the args sequence or the string if
+   a string is given, but can be explicitly set by using the *executable*
+   argument.  When *executable* is given, the first item in the args sequence
+   is still treated by most programs as the command name, which can then be
+   different from the actual executable name.  On Unix, it becomes the display
+   name for the executing program in utilities such as :program:`ps`.
 
    On Unix, with *shell=False* (default): In this case, the Popen class uses
    :meth:`os.execvp` to execute the child program. *args* should normally be a
diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index dc8d2cf..ced3398 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -815,12 +815,8 @@
 imprt mod`` from within ``pkg.subpkg1`` you will import ``pkg.subpkg2.mod``.
 The specification for relative imports is contained within :pep:`328`.
 
-
-.. index:: builtin: __import__
-
-The built-in function :func:`__import__` is provided to support applications
-that determine which modules need to be loaded dynamically; refer to
-:ref:`built-in-funcs` for additional information.
+:func:`importlib.import_module` is provided to support applications that
+determine which modules need to be loaded dynamically.
 
 
 .. _future:
diff --git a/Lib/gettext.py b/Lib/gettext.py
index d62ac07..4c957c0 100644
--- a/Lib/gettext.py
+++ b/Lib/gettext.py
@@ -415,7 +415,6 @@
         if fallback:
             return NullTranslations()
         raise IOError(ENOENT, 'No translation file found for domain', domain)
-    # TBD: do we need to worry about the file pointer getting collected?
     # Avoid opening, reading, and parsing the .mo file after it's been done
     # once.
     result = None
@@ -423,7 +422,8 @@
         key = os.path.abspath(mofile)
         t = _translations.get(key)
         if t is None:
-            t = _translations.setdefault(key, class_(open(mofile, 'rb')))
+            with open(mofile, 'rb') as fp:
+                t = _translations.setdefault(key, class_(fp))
         # Copy the translation object to allow setting fallbacks and
         # output charset. All other instance data is shared with the
         # cached object.
diff --git a/Lib/idlelib/macosxSupport.py b/Lib/idlelib/macosxSupport.py
index b23221e..b794a83 100644
--- a/Lib/idlelib/macosxSupport.py
+++ b/Lib/idlelib/macosxSupport.py
@@ -88,6 +88,7 @@
         # on an EditorWindow instance that is then passed as the first
         # argument to ConfigDialog)
         root.instance_dict = flist.inversedict
+        root.instance_dict = flist.inversedict
         configDialog.ConfigDialog(root, 'Settings')
 
 
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index 517a7a9..9780c83 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -720,8 +720,12 @@
         """
         if raiseExceptions:
             ei = sys.exc_info()
-            traceback.print_exception(ei[0], ei[1], ei[2], None, sys.stderr)
-            del ei
+            try:
+                traceback.print_exception(ei[0], ei[1], ei[2], None, sys.stderr)
+            except IOError:
+                pass    # see issue 5971
+            finally:
+                del ei
 
 class StreamHandler(Handler):
     """
diff --git a/Lib/test/support.py b/Lib/test/support.py
index df114a2..b91d732 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -5,6 +5,7 @@
 
 import contextlib
 import errno
+import functools
 import socket
 import sys
 import os
@@ -933,6 +934,16 @@
         count += 1
         time.sleep(0.1)
 
+def reap_threads(func):
+    @functools.wraps(func)
+    def decorator(*args):
+        key = threading_setup()
+        try:
+            return func(*args)
+        finally:
+            threading_cleanup(*key)
+    return decorator
+
 def reap_children():
     """Use this function at the end of test_main() whenever sub-processes
     are started.  This will help ensure that no extra children (zombies)
diff --git a/Lib/test/test_hashlib.py b/Lib/test/test_hashlib.py
index 594f5dd..5bfea6b 100644
--- a/Lib/test/test_hashlib.py
+++ b/Lib/test/test_hashlib.py
@@ -267,10 +267,9 @@
 
         self.assertEqual(expected_hash, hasher.hexdigest())
 
-
+@support.reap_threads
 def test_main():
     support.run_unittest(HashLibTestCase)
 
-
 if __name__ == "__main__":
     test_main()
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index c680d8d..0600cfc 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -35,9 +35,7 @@
                 retries += 1
                 if retries > 10:
                     # XXX test skipped
-                    print("couldn't allocate two consecutive fds, "
-                        "skipping test_closerange", file=sys.stderr)
-                    return
+                    self.skipTest("couldn't allocate two consecutive fds")
                 first, second = second, os.dup(second)
         finally:
             os.close(second)
diff --git a/Lib/test/test_unittest.py b/Lib/test/test_unittest.py
index ea33180..858f24b 100644
--- a/Lib/test/test_unittest.py
+++ b/Lib/test/test_unittest.py
@@ -3175,7 +3175,7 @@
 
         result = MockResult()
         test = TestableTest('testNothing')
-        test._result = result
+        test._resultForDoCleanups = result
 
         exc1 = Exception('foo')
         exc2 = Exception('bar')
diff --git a/Lib/unittest.py b/Lib/unittest.py
index cdccd8c..9c3024a 100644
--- a/Lib/unittest.py
+++ b/Lib/unittest.py
@@ -353,7 +353,7 @@
            not have a method with the specified name.
         """
         self._testMethodName = methodName
-        self._result = None
+        self._resultForDoCleanups = None
         try:
             testMethod = getattr(self, methodName)
         except AttributeError:
@@ -457,7 +457,7 @@
             if startTestRun is not None:
                 startTestRun()
 
-        self._result = result
+        self._resultForDoCleanups = result
         result.startTest(self)
         if getattr(self.__class__, "__unittest_skip__", False):
             # If the whole class was skipped.
@@ -511,7 +511,7 @@
     def doCleanups(self):
         """Execute all cleanup functions. Normally called for you after
         tearDown."""
-        result = self._result
+        result = self._resultForDoCleanups
         ok = True
         while self._cleanups:
             function, args, kwargs = self._cleanups.pop(-1)
@@ -732,23 +732,32 @@
             if seq1 == seq2:
                 return
 
+            seq1_repr = repr(seq1)
+            seq2_repr = repr(seq2)
+            if len(seq1_repr) > 30:
+                seq1_repr = seq1_repr[:30] + '...'
+            if len(seq2_repr) > 30:
+                seq2_repr = seq2_repr[:30] + '...'
+            elements = (seq_type_name.capitalize(), seq1_repr, seq2_repr)
+            differing = '%ss differ: %s != %s\n' % elements
+
             for i in range(min(len1, len2)):
                 try:
                     item1 = seq1[i]
                 except (TypeError, IndexError, NotImplementedError):
-                    differing = ('Unable to index element %d of first %s\n' %
+                    differing += ('\nUnable to index element %d of first %s\n' %
                                  (i, seq_type_name))
                     break
 
                 try:
                     item2 = seq2[i]
                 except (TypeError, IndexError, NotImplementedError):
-                    differing = ('Unable to index element %d of second %s\n' %
+                    differing += ('\nUnable to index element %d of second %s\n' %
                                  (i, seq_type_name))
                     break
 
                 if item1 != item2:
-                    differing = ('First differing element %d:\n%s\n%s\n' %
+                    differing += ('\nFirst differing element %d:\n%s\n%s\n' %
                                  (i, item1, item2))
                     break
             else:
@@ -756,28 +765,26 @@
                     type(seq1) != type(seq2)):
                     # The sequences are the same, but have differing types.
                     return
-                # A catch-all message for handling arbitrary user-defined
-                # sequences.
-                differing = '%ss differ:\n' % seq_type_name.capitalize()
-                if len1 > len2:
-                    differing = ('First %s contains %d additional '
-                                 'elements.\n' % (seq_type_name, len1 - len2))
-                    try:
-                        differing += ('First extra element %d:\n%s\n' %
-                                      (len2, seq1[len2]))
-                    except (TypeError, IndexError, NotImplementedError):
-                        differing += ('Unable to index element %d '
-                                      'of first %s\n' % (len2, seq_type_name))
-                elif len1 < len2:
-                    differing = ('Second %s contains %d additional '
-                                 'elements.\n' % (seq_type_name, len2 - len1))
-                    try:
-                        differing += ('First extra element %d:\n%s\n' %
-                                      (len1, seq2[len1]))
-                    except (TypeError, IndexError, NotImplementedError):
-                        differing += ('Unable to index element %d '
-                                      'of second %s\n' % (len1, seq_type_name))
-        standardMsg = differing + '\n'.join(difflib.ndiff(pprint.pformat(seq1).splitlines(),
+
+            if len1 > len2:
+                differing += ('\nFirst %s contains %d additional '
+                             'elements.\n' % (seq_type_name, len1 - len2))
+                try:
+                    differing += ('First extra element %d:\n%s\n' %
+                                  (len2, seq1[len2]))
+                except (TypeError, IndexError, NotImplementedError):
+                    differing += ('Unable to index element %d '
+                                  'of first %s\n' % (len2, seq_type_name))
+            elif len1 < len2:
+                differing += ('\nSecond %s contains %d additional '
+                             'elements.\n' % (seq_type_name, len2 - len1))
+                try:
+                    differing += ('First extra element %d:\n%s\n' %
+                                  (len1, seq2[len1]))
+                except (TypeError, IndexError, NotImplementedError):
+                    differing += ('Unable to index element %d '
+                                  'of second %s\n' % (len1, seq_type_name))
+        standardMsg = differing + '\n' + '\n'.join(difflib.ndiff(pprint.pformat(seq1).splitlines(),
                                             pprint.pformat(seq2).splitlines()))
         msg = self._formatMessage(msg, standardMsg)
         self.fail(msg)
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 5f2efb9..5f24187 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -1055,28 +1055,27 @@
             self.fp.write(zinfo.FileHeader())
             return
 
-        fp = io.open(filename, "rb")
-        # Must overwrite CRC and sizes with correct data later
-        zinfo.CRC = CRC = 0
-        zinfo.compress_size = compress_size = 0
-        zinfo.file_size = file_size = 0
-        self.fp.write(zinfo.FileHeader())
-        if zinfo.compress_type == ZIP_DEFLATED:
-            cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
-                 zlib.DEFLATED, -15)
-        else:
-            cmpr = None
-        while 1:
-            buf = fp.read(1024 * 8)
-            if not buf:
-                break
-            file_size = file_size + len(buf)
-            CRC = crc32(buf, CRC) & 0xffffffff
-            if cmpr:
-                buf = cmpr.compress(buf)
-                compress_size = compress_size + len(buf)
-            self.fp.write(buf)
-        fp.close()
+        with open(filename, "rb") as fp:
+            # Must overwrite CRC and sizes with correct data later
+            zinfo.CRC = CRC = 0
+            zinfo.compress_size = compress_size = 0
+            zinfo.file_size = file_size = 0
+            self.fp.write(zinfo.FileHeader())
+            if zinfo.compress_type == ZIP_DEFLATED:
+                cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
+                     zlib.DEFLATED, -15)
+            else:
+                cmpr = None
+            while 1:
+                buf = fp.read(1024 * 8)
+                if not buf:
+                    break
+                file_size = file_size + len(buf)
+                CRC = crc32(buf, CRC) & 0xffffffff
+                if cmpr:
+                    buf = cmpr.compress(buf)
+                    compress_size = compress_size + len(buf)
+                self.fp.write(buf)
         if cmpr:
             buf = cmpr.flush()
             compress_size = compress_size + len(buf)
@@ -1400,9 +1399,8 @@
             tgtdir = os.path.dirname(tgt)
             if not os.path.exists(tgtdir):
                 os.makedirs(tgtdir)
-            fp = io.open(tgt, 'wb')
-            fp.write(zf.read(path))
-            fp.close()
+            with open(tgt, 'wb') as fp:
+                fp.write(zf.read(path))
         zf.close()
 
     elif args[0] == '-c':
diff --git a/Tools/freeze/makeconfig.py b/Tools/freeze/makeconfig.py
index e2a181c..8eb0879 100644
--- a/Tools/freeze/makeconfig.py
+++ b/Tools/freeze/makeconfig.py
@@ -3,7 +3,7 @@
 
 # Write the config.c file
 
-never = ['marshal', '__main__', 'builtins', 'sys', 'exceptions']
+never = ['marshal', '__main__', 'builtins', 'sys', 'exceptions', '_warnings']
 
 def makeconfig(infp, outfp, modules, with_ifdef=0):
     m1 = re.compile('-- ADDMODULE MARKER 1 --')