mirror of https://github.com/python/cpython
Fix typos and wording in what’s new 3.2.
- The entry about shutil.copytree is just a revert of r84524 which looks like an unfinished edition. - The use of gender-neutral language (s/his/their/) removes the implicit assumption that programmer == male (change agreed by Antoine). - Other changes should be uncontroversial fixes. I haven’t rewrapped under 80 lines to keep the diffs readable; I’ll rewrap later.
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@ -39,9 +39,10 @@
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sufficient; the e-mail address isn't necessary. It's helpful to
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add the issue number:
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XXX Describe the transmogrify() function added to the socket
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module.
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(Contributed by P.Y. Developer; :issue:`12345`.)
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XXX Describe the transmogrify() function added to the socket
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module.
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(Contributed by P.Y. Developer; :issue:`12345`.)
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This saves the maintainer the effort of going through the SVN log
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when researching a change.
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@ -49,24 +50,24 @@
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This article explains the new features in Python 3.2, compared to 3.1.
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PEP 391: Dictionary Based Configuration for Logging
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===================================================
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PEP 391: Dictionary Based Configuration for Logging
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====================================================
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The :mod:`logging` module had two ways of configuring the module, either calling
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functions for each option or by reading an external file saved in a ConfigParser
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The :mod:`logging` module had two ways of configuring the module, either by calling
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functions for each option or by reading an external file saved in a :mod:`ConfigParser`
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format. Those options did not provide the flexibility to create configurations
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from JSON or YAML files and they did not support incremental configuration which
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from JSON or YAML files and they did not support incremental configuration, which
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is needed for specifying logger options from a command line.
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To support a more flexible style, the module now offers
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:func:`logging.config.dictConfig` to use dictionaries to specify logger
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configurations (including formatters, handlers, filters, and loggers). For
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configuration (including formatters, handlers, filters, and loggers). For
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example:
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>>> import logging.config
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>>> logging.config.dictConfig(json.load(open('log.cfg', 'rb')))
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The above fragment configures logging from a JSON encoded dictionary stored in
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The above fragment configures logging from a JSON-encoded dictionary stored in a
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file called "log.cfg". Here's a working example of a configuration dictionary::
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{"version": 1,
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@ -101,14 +102,14 @@ a cached file created by another interpreter, it would recompile the source and
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overwrite the cached file, thus losing the benefits of caching.
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The issue of "pyc fights" has become more pronounced as it has become
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common-place for Linux distributions to ship with multiple versions of Python.
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commonplace for Linux distributions to ship with multiple versions of Python.
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These conflicts also arise with CPython alternatives such as Unladen Swallow.
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To solve this problem, Python's import machinery has been extended to use
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distinct filenames for each interpreter. Instead of Python3.2 and Python3.3 and
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UnladenSwallow each competing for a file called "mymodule.pyc", they will now
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distinct filenames for each interpreter. Instead of Python 3.2 and Python 3.3 and
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Unladen Swallow each competing for a file called "mymodule.pyc", they will now
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look for "mymodule.cpython-32.pyc", "mymodule.cpython-33.pyc", and
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"mymodule.unladen10.pyc". And to keep prevent all of these new files from
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"mymodule.unladen10.pyc". And to prevent all of these new files from
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cluttering source directories, the *pyc* files are now collected in a
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"__pycache__" directory stored under the package directory.
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@ -157,7 +158,7 @@ giving them a common directory and distinct names for each version.
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The common directory is "pyshared" and the file names are made distinct by
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identifying the Python implementation (such as CPython, PyPy, Jython, etc.), the
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major and minor version numbers, and optional build flags (such as "d" for
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debug, "m" for pymalloc, "u" for wide-unicode). For an arbtrary package, "foo",
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debug, "m" for pymalloc, "u" for wide-unicode). For an arbitrary package "foo",
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you may see these files when the distribution package is installed::
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/usr/share/pyshared/foo.cpython-32m.so
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@ -187,15 +188,15 @@ Some smaller changes made to the core Python language are:
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it only catches :exc:`AttributeError`. Under the hood, :func:`hasattr` works
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by calling :func:`getattr` and throwing away the results. This is necessary
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because dynamic attribute creation is possible using :meth:`__getattribute__`
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or :meth:`__getattr`. If :func:`hasattr` were to just scan instance and class
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or :meth:`__getattr__`. If :func:`hasattr` were to just scan instance and class
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dictionaries it would miss the dynmaic methods and make it difficult to
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implement proxy objects.
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(Discovered by Yury Selivanov and fixed by Benjamin Peterson; :issue:`9666`.)
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* The :func:`str` of a float or complex number is now the same as it
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* The :func:`str` of a float or complex number is now the same as its
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:func:`repr`. Previously, the :func:`str` form was shorter but that just
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caused confusion and is no longer needed now that we the shortest possible
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caused confusion and is no longer needed now that the shortest possible
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:func:`repr` is displayed by default:
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>>> repr(math.pi)
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@ -223,7 +224,7 @@ Some smaller changes made to the core Python language are:
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New, Improved, and Deprecated Modules
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=====================================
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* The :mod:`functools` module now includes a new decorator for caching function
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* The :mod:`functools` module includes a new decorator for caching function
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calls. :func:`functools.lru_cache` can save repeated queries to an external
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resource whenever the results are expected to be the same.
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@ -261,7 +262,7 @@ New, Improved, and Deprecated Modules
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`appspot issue 53094 <http://codereview.appspot.com/53094>`_.)
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* The :class:`ftplib.FTP` class now supports the context manager protocol to
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unconditionally consume :exc:`socket.error` exceptions and to close the ftp
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unconditionally consume :exc:`socket.error` exceptions and to close the FTP
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connection when done:
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>>> from ftplib import FTP
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@ -279,7 +280,7 @@ New, Improved, and Deprecated Modules
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* A warning message will now get printed at interpreter shutdown if the
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:data:`gc.garbage` list isn't empty. This is meant to make the programmer
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aware that his code contains object finalization issues.
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aware that their code contains object finalization issues.
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(Added by Antoine Pitrou; :issue:`477863`.)
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@ -290,11 +291,11 @@ New, Improved, and Deprecated Modules
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* The :func:`shutil.copytree` function has two new options:
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* *ignore_dangling_symlinks*: when ``symlinks=False`` dp that the function
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copies the file pointed to by the symlink, not the symlink itself. This
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* *ignore_dangling_symlinks*: when ``symlinks=False`` (meaning that the function
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copies the file pointed to by the symlink, not the symlink itself), this
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option will silence the error raised if the file doesn't exist.
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* *copy_function*: is a callable that will be used to copy files.
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* *copy_function*: a callable that will be used to copy files.
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:func:`shutil.copy2` is used by default.
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(Contributed by Tarek Ziadé.)
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@ -411,8 +412,8 @@ The value is an encoding name, e.g. ``iso-8859-1``. This variable is not
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available (ignored) on Windows and Mac OS X: the filesystem encoding is pinned
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to ``'mbcs'`` on Windows and ``'utf-8'`` on Mac OS X.
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The :mod:`os` module has two new functions: :func:`os.fsencode` and
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:func:`os.fsdecode`.
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The :mod:`os` module has two new functions: :func:`~os.fsencode` and
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:func:`~os.fsdecode`.
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.. IDLE
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@ -458,5 +459,5 @@ require changes to your code:
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* The :ctype:`PyCObject` type, deprecated in 3.1, has been removed. To wrap
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opaque C pointers in Python objects, the :ctype:`PyCapsule` API should be used
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instead; the new type has a well defined interface for passing typing safety
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instead; the new type has a well-defined interface for passing typing safety
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information and a less complicated signature for calling a destructor.
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