Merged revisions 83593 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/release27-maint

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  r83593 | georg.brandl | 2010-08-02 23:44:25 +0200 (Mo, 02 Aug 2010) | 57 lines

  Merged revisions 83536,83546-83548,83550,83554-83555,83558,83563,83565,83571,83574-83575 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/branches/py3k

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    r83536 | georg.brandl | 2010-08-02 19:49:25 +0200 (Mo, 02 Aug 2010) | 1 line

    #8578: mention danger of not incref'ing weak referenced object.
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    r83546 | georg.brandl | 2010-08-02 21:16:34 +0200 (Mo, 02 Aug 2010) | 1 line

    #7973: Fix distutils options spelling.
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    r83547 | georg.brandl | 2010-08-02 21:19:26 +0200 (Mo, 02 Aug 2010) | 1 line

    #7386: add example that shows that trailing path separators are stripped.
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    r83548 | georg.brandl | 2010-08-02 21:23:34 +0200 (Mo, 02 Aug 2010) | 1 line

    #8172: how does one use a property?
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    r83550 | georg.brandl | 2010-08-02 21:32:43 +0200 (Mo, 02 Aug 2010) | 1 line

    #9451: strengthen warning about __*__ special name usage.
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    r83554 | georg.brandl | 2010-08-02 21:43:05 +0200 (Mo, 02 Aug 2010) | 1 line

    #7280: note about nasmw.exe.
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    r83555 | georg.brandl | 2010-08-02 21:44:48 +0200 (Mo, 02 Aug 2010) | 1 line

    #8861: remove unused variable.
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    r83558 | georg.brandl | 2010-08-02 22:05:19 +0200 (Mo, 02 Aug 2010) | 1 line

    #8648: document UTF-7 codec functions.
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    r83563 | georg.brandl | 2010-08-02 22:21:21 +0200 (Mo, 02 Aug 2010) | 1 line

    #9037: add example how to raise custom exceptions from C code.
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    r83565 | georg.brandl | 2010-08-02 22:27:20 +0200 (Mo, 02 Aug 2010) | 1 line

    #9111: document that do_help() looks at docstrings.
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    r83571 | georg.brandl | 2010-08-02 22:44:34 +0200 (Mo, 02 Aug 2010) | 1 line

    Clarify that abs() is not a namespace.
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    r83574 | georg.brandl | 2010-08-02 22:47:56 +0200 (Mo, 02 Aug 2010) | 1 line

    #6867: epoll.register() returns None.
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    r83575 | georg.brandl | 2010-08-02 22:52:10 +0200 (Mo, 02 Aug 2010) | 1 line

    #9238: zipfile does handle archive comments.
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................

15 files changed, 91 insertions, 28 deletions

diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 7fce170..0288271 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -567,6 +567,38 @@ These are the UTF-16 codec APIs:
    *NULL* if an exception was raised by the codec.
 
 
+UTF-7 Codecs
+""""""""""""
+
+These are the UTF-7 codec APIs:
+
+
+.. cfunction:: PyObject* PyUnicode_DecodeUTF7(const char *s, Py_ssize_t size, const char *errors)
+
+   Create a Unicode object by decoding *size* bytes of the UTF-7 encoded string
+   *s*.  Return *NULL* if an exception was raised by the codec.
+
+
+.. cfunction:: PyObject* PyUnicode_DecodeUTF8Stateful(const char *s, Py_ssize_t size, const char *errors, Py_ssize_t *consumed)
+
+   If *consumed* is *NULL*, behave like :cfunc:`PyUnicode_DecodeUTF7`.  If
+   *consumed* is not *NULL*, trailing incomplete UTF-7 base-64 sections will not
+   be treated as an error.  Those bytes will not be decoded and the number of
+   bytes that have been decoded will be stored in *consumed*.
+
+
+.. cfunction:: PyObject* PyUnicode_EncodeUTF7(const Py_UNICODE *s, Py_ssize_t size, int base64SetO, int base64WhiteSpace, const char *errors)
+
+   Encode the :ctype:`Py_UNICODE` buffer of the given size using UTF-7 and
+   return a Python bytes object.  Return *NULL* if an exception was raised by
+   the codec.
+
+   If *base64SetO* is nonzero, "Set O" (punctuation that has no otherwise
+   special meaning) will be encoded in base-64.  If *base64WhiteSpace* is
+   nonzero, whitespace will be encoded in base-64.  Both are set to zero for the
+   Python "utf-7" codec.
+
+
 Unicode-Escape Codecs
 """""""""""""""""""""
 
diff --git a/Doc/c-api/weakref.rst b/Doc/c-api/weakref.rst
index 80ebf82..226ec38 100644
--- a/Doc/c-api/weakref.rst
+++ b/Doc/c-api/weakref.rst
@@ -63,10 +63,17 @@ as much as it can.
 .. cfunction:: PyObject* PyWeakref_GetObject(PyObject *ref)
 
    Return the referenced object from a weak reference, *ref*.  If the referent is
-   no longer live, returns ``None``.
+   no longer live, returns :const:`Py_None`.
 
    .. versionadded:: 2.2
 
+   .. warning::
+
+      This function returns a **borrowed reference** to the referenced object.
+      This means that you should always call :cfunc:`Py_INCREF` on the object
+      except if you know that it cannot be destroyed while you are still
+      using it.
+
 
 .. cfunction:: PyObject* PyWeakref_GET_OBJECT(PyObject *ref)
 
diff --git a/Doc/distutils/builtdist.rst b/Doc/distutils/builtdist.rst
index 8615cbb..f1dad77 100644
--- a/Doc/distutils/builtdist.rst
+++ b/Doc/distutils/builtdist.rst
@@ -173,7 +173,7 @@ easily specify multiple formats in one run.  If you need to do both, you can
 explicitly specify multiple :command:`bdist_\*` commands and their options::
 
    python setup.py bdist_rpm --packager="John Doe <jdoe@example.org>" \
-                   bdist_wininst --target_version="2.0"
+                   bdist_wininst --target-version="2.0"
 
 Creating RPM packages is driven by a :file:`.spec` file, much as using the
 Distutils is driven by the setup script.  To make your life easier, the
diff --git a/Doc/extending/extending.rst b/Doc/extending/extending.rst
index 6f77117..588534a 100644
--- a/Doc/extending/extending.rst
+++ b/Doc/extending/extending.rst
@@ -228,9 +228,28 @@ needed to ensure that it will not be discarded, causing :cdata:`SpamError` to
 become a dangling pointer. Should it become a dangling pointer, C code which
 raises the exception could cause a core dump or other unintended side effects.
 
-We discuss the use of PyMODINIT_FUNC as a function return type later in this
+We discuss the use of ``PyMODINIT_FUNC`` as a function return type later in this
 sample.
 
+The :exc:`spam.error` exception can be raised in your extension module using a
+call to :cfunc:`PyErr_SetString` as shown below::
+
+   static PyObject *
+   spam_system(PyObject *self, PyObject *args)
+   {
+       const char *command;
+       int sts;
+
+       if (!PyArg_ParseTuple(args, "s", &command))
+           return NULL;
+       sts = system(command);
+       if (sts < 0) {
+           PyErr_SetString(SpamError, "System command failed");
+           return NULL;
+       }
+       return PyLong_FromLong(sts);
+   }
+
 
 .. _backtoexample:
 
diff --git a/Doc/library/cmd.rst b/Doc/library/cmd.rst
index 5782b5b..cc49990 100644
--- a/Doc/library/cmd.rst
+++ b/Doc/library/cmd.rst
@@ -80,11 +80,13 @@ A :class:`Cmd` instance has the following methods:
    are the beginning and ending indexes of the prefix text, which could be used to
    provide different completion depending upon which position the argument is in.
 
-   All subclasses of :class:`Cmd` inherit a predefined :meth:`do_help`. This
+   All subclasses of :class:`Cmd` inherit a predefined :meth:`do_help`.  This
    method, called with an argument ``'bar'``, invokes the corresponding method
-   :meth:`help_bar`.  With no argument, :meth:`do_help` lists all available help
-   topics (that is, all commands with corresponding :meth:`help_\*` methods), and
-   also lists any undocumented commands.
+   :meth:`help_bar`, and if that is not present, prints the docstring of
+   :meth:`do_bar`, if available.  With no argument, :meth:`do_help` lists all
+   available help topics (that is, all commands with corresponding
+   :meth:`help_\*` methods or commands that have docstrings), and also lists any
+   undocumented commands.
 
 
 .. method:: Cmd.onecmd(str)
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index a70a29d..f24c46d 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -864,7 +864,7 @@ available.  They are listed here in alphabetical order.
 
    *fget* is a function for getting an attribute value, likewise *fset* is a
    function for setting, and *fdel* a function for del'ing, an attribute.  Typical
-   use is to define a managed attribute x::
+   use is to define a managed attribute ``x``::
 
       class C(object):
           def __init__(self):
@@ -878,6 +878,9 @@ available.  They are listed here in alphabetical order.
               del self._x
           x = property(getx, setx, delx, "I'm the 'x' property.")
 
+   If then *c* is an instance of *C*, ``c.x`` will invoke the getter,
+   ``c.x = value`` will invoke the setter and ``del c.x`` the deleter.
+
    If given, *doc* will be the docstring of the property attribute. Otherwise, the
    property will copy *fget*'s docstring (if it exists).  This makes it possible to
    create read-only properties easily using :func:`property` as a :term:`decorator`::
diff --git a/Doc/library/os.path.rst b/Doc/library/os.path.rst
index c4fbae9..ae55dd8 100644
--- a/Doc/library/os.path.rst
+++ b/Doc/library/os.path.rst
@@ -212,7 +212,9 @@ write files see :func:`open`, and for accessing the filesystem see the
 .. function:: normpath(path)
 
    Normalize a pathname.  This collapses redundant separators and up-level
-   references so that ``A//B``, ``A/./B`` and ``A/foo/../B`` all become ``A/B``.
+   references so that ``A//B``, ``A/B/``, ``A/./B`` and ``A/foo/../B`` all become
+   ``A/B``.
+
    It does not normalize the case (use :func:`normcase` for that).  On Windows, it
    converts forward slashes to backward slashes. It should be understood that this
    may change the meaning of the path if it contains symbolic links!
diff --git a/Doc/library/zipfile.rst b/Doc/library/zipfile.rst
index 8b92f1f..b2bf730 100644
--- a/Doc/library/zipfile.rst
+++ b/Doc/library/zipfile.rst
@@ -15,10 +15,8 @@ advanced use of this module will require an understanding of the format, as
 defined in `PKZIP Application Note
 <http://www.pkware.com/documents/casestudies/APPNOTE.TXT>`_.
 
-This module does not currently handle multi-disk ZIP files, or ZIP files
-which have appended comments (although it correctly handles comments
-added to individual archive members---for which see the :ref:`zipinfo-objects`
-documentation). It can handle ZIP files that use the ZIP64 extensions
+This module does not currently handle multi-disk ZIP files.
+It can handle ZIP files that use the ZIP64 extensions
 (that is ZIP files that are more than 4 GByte in size).  It supports
 decryption of encrypted files in ZIP archives, but it currently cannot
 create an encrypted file.  Decryption is extremely slow as it is
@@ -66,8 +64,7 @@ The module defines the following items:
 .. function:: is_zipfile(filename)
 
    Returns ``True`` if *filename* is a valid ZIP file based on its magic number,
-   otherwise returns ``False``.  This module does not currently handle ZIP files
-   which have appended comments.
+   otherwise returns ``False``.
 
 
 .. data:: ZIP_STORED
diff --git a/Doc/reference/lexical_analysis.rst b/Doc/reference/lexical_analysis.rst
index e88c0ba..d4c7990 100644
--- a/Doc/reference/lexical_analysis.rst
+++ b/Doc/reference/lexical_analysis.rst
@@ -386,11 +386,12 @@ characters:
       information on this convention.
 
 ``__*__``
-   System-defined names.  These names are defined by the interpreter and its
-   implementation (including the standard library); applications should not expect
-   to define additional names using this convention.  The set of names of this
-   class defined by Python may be extended in future versions. See section
-   :ref:`specialnames`.
+   System-defined names. These names are defined by the interpreter and its
+   implementation (including the standard library).  Current system names are
+   discussed in the :ref:`specialnames` section and elsewhere.  More will likely
+   be defined in future versions of Python.  *Any* use of ``__*__`` names, in
+   any context, that does not follow explicitly documented use, is subject to
+   breakage without warning.
 
 ``__*``
    Class-private names.  Names in this category, when used within the context of a
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index 3f481b1..d729955 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -64,7 +64,7 @@ Let's begin with some definitions.
 A *namespace* is a mapping from names to objects.  Most namespaces are currently
 implemented as Python dictionaries, but that's normally not noticeable in any
 way (except for performance), and it may change in the future.  Examples of
-namespaces are: the set of built-in names (functions such as :func:`abs`, and
+namespaces are: the set of built-in names (containing functions such as :func:`abs`, and
 built-in exception names); the global names in a module; and the local names in
 a function invocation.  In a sense the set of attributes of an object also form
 a namespace.  The important thing to know about namespaces is that there is
diff --git a/Lib/curses/wrapper.py b/Lib/curses/wrapper.py
index 9f1d867..3cdaa82 100644
--- a/Lib/curses/wrapper.py
+++ b/Lib/curses/wrapper.py
@@ -17,10 +17,9 @@ def wrapper(func, *args, **kwds):
     wrapper().
     """
 
-    res = None
     try:
         # Initialize curses
-        stdscr=curses.initscr()
+        stdscr = curses.initscr()
 
         # Turn off echoing of keys, and enter cbreak mode,
         # where no buffering is performed on keyboard input
diff --git a/Lib/distutils/command/bdist_msi.py b/Lib/distutils/command/bdist_msi.py
index da0b30d..42271c4 100644
--- a/Lib/distutils/command/bdist_msi.py
+++ b/Lib/distutils/command/bdist_msi.py
@@ -138,7 +138,7 @@ class bdist_msi (Command):
             if not self.skip_build and self.distribution.has_ext_modules()\
                and self.target_version != short_version:
                 raise DistutilsOptionError, \
-                      "target version can only be %s, or the '--skip_build'" \
+                      "target version can only be %s, or the '--skip-build'" \
                       " option must be specified" % (short_version,)
         else:
             self.target_version = short_version
diff --git a/Lib/distutils/command/bdist_wininst.py b/Lib/distutils/command/bdist_wininst.py
index d153e2b..128e199 100644
--- a/Lib/distutils/command/bdist_wininst.py
+++ b/Lib/distutils/command/bdist_wininst.py
@@ -93,7 +93,7 @@ class bdist_wininst (Command):
             short_version = get_python_version()
             if self.target_version and self.target_version != short_version:
                 raise DistutilsOptionError, \
-                      "target version can only be %s, or the '--skip_build'" \
+                      "target version can only be %s, or the '--skip-build'" \
                       " option must be specified" % (short_version,)
             self.target_version = short_version
 
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index ba5fdb4..022c099 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -910,10 +910,9 @@ pyepoll_register(pyEpoll_Object *self, PyObject *args, PyObject *kwds)
 }
 
 PyDoc_STRVAR(pyepoll_register_doc,
-"register(fd[, eventmask]) -> bool\n\
+"register(fd[, eventmask]) -> None\n\
 \n\
-Registers a new fd or modifies an already registered fd. register() returns\n\
-True if a new fd was registered or False if the event mask for fd was modified.\n\
+Registers a new fd or modifies an already registered fd.\n\
 fd is the target file descriptor of the operation.\n\
 events is a bit set composed of the various EPOLL constants; the default\n\
 is EPOLL_IN | EPOLL_OUT | EPOLL_PRI.\n\
diff --git a/PCbuild/readme.txt b/PCbuild/readme.txt
index 44b7b8f..11a9bce 100644
--- a/PCbuild/readme.txt
+++ b/PCbuild/readme.txt
@@ -155,6 +155,8 @@ _ssl
     You must install the NASM assembler from
         http://nasm.sf.net
     for x86 builds.  Put nasmw.exe anywhere in your PATH.
+    Note: recent releases of nasm only have nasm.exe. Just rename it to 
+    nasmw.exe.
 
     You can also install ActivePerl from
         http://www.activestate.com/Products/ActivePerl/