diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/whatsnew/2.6.rst | 50 |
1 files changed, 26 insertions, 24 deletions
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst index 883eb90..951c46a 100644 --- a/Doc/whatsnew/2.6.rst +++ b/Doc/whatsnew/2.6.rst @@ -623,7 +623,7 @@ versa.) Two other classes, :class:`Pool` and :class:`Manager`, provide higher-level interfaces. :class:`Pool` will create a fixed number of worker processes, and requests can then be distributed to the workers -by calling :meth:`apply` or `apply_async` to add a single request, +by calling :meth:`apply` or :meth:`apply_async` to add a single request, and :meth:`map` or :meth:`map_async` to add a number of requests. The following code uses a :class:`Pool` to spread requests across 5 worker processes and retrieve a list of results:: @@ -977,10 +977,10 @@ sequence of bytes:: bytearray(b'ABC') >>> b = bytearray(u'\u21ef\u3244', 'utf-8') >>> b - bytearray(b'\xe2\x87\xaf \xe3\x89\x84') + bytearray(b'\xe2\x87\xaf\xe3\x89\x84') >>> b[0] = '\xe3' >>> b - bytearray(b'\xe3\x87\xaf \xe3\x89\x84') + bytearray(b'\xe3\x87\xaf\xe3\x89\x84') >>> unicode(str(b), 'utf-8') u'\u31ef \u3244' @@ -1975,7 +1975,7 @@ changes, or look through the Subversion logs for all the details. * A new function in the :mod:`heapq` module, ``merge(iter1, iter2, ...)``, takes any number of iterables returning data in sorted - order, and returns a new iterator that returns the contents of all + order, and returns a new generator that returns the contents of all the iterators, also in sorted order. For example:: heapq.merge([1, 3, 5, 9], [2, 8, 16]) -> @@ -2030,7 +2030,7 @@ changes, or look through the Subversion logs for all the details. repeated *N* times. With a single iterable argument, *N*-tuples are returned:: - itertools.product([1,2], repeat=3)) -> + itertools.product([1,2], repeat=3) -> [(1, 1, 1), (1, 1, 2), (1, 2, 1), (1, 2, 2), (2, 1, 1), (2, 1, 2), (2, 2, 1), (2, 2, 2)] @@ -2178,7 +2178,7 @@ changes, or look through the Subversion logs for all the details. :const:`UF_APPEND` to indicate that data can only be appended to the file. (Contributed by M. Levinson.) - ``os.closerange(*low*, *high*)`` efficiently closes all file descriptors + ``os.closerange(low, high)`` efficiently closes all file descriptors from *low* to *high*, ignoring any errors and not including *high* itself. This function is now used by the :mod:`subprocess` module to make starting processes faster. (Contributed by Georg Brandl; :issue:`1663329`.) @@ -2311,12 +2311,12 @@ changes, or look through the Subversion logs for all the details. will be ignored, not copied. The :mod:`shutil` module also provides an :func:`ignore_patterns` - function for use with this new parameter. - :func:`ignore_patterns` takes an arbitrary number of glob-style patterns - and will ignore any files and directories that match any of these patterns. - The following example copies a directory tree, but skips both - :file:`.svn` directories and Emacs backup - files, which have names ending with '~':: + function for use with this new parameter. :func:`ignore_patterns` + takes an arbitrary number of glob-style patterns and returns a + callable that will ignore any files and directories that match any + of these patterns. The following example copies a directory tree, + but skips both :file:`.svn` directories and Emacs backup files, + which have names ending with '~':: shutil.copytree('Doc/library', '/tmp/library', ignore=shutil.ignore_patterns('*~', '.svn')) @@ -2523,13 +2523,15 @@ changes, or look through the Subversion logs for all the details. (Contributed by Dwayne Bailey; :issue:`1581073`.) -* The :mod:`threading` module API is being changed to use properties such as - :attr:`daemon` instead of :meth:`setDaemon` and :meth:`isDaemon` methods, and - some methods have been renamed to use underscores instead of camel-case; for - example, the :meth:`activeCount` method is renamed to :meth:`active_count`. - The 2.6 version of the module supports the same properties and renamed - methods, but doesn't remove the old methods. 3.0 also fully supports both - APIs, and a date for the deprecation of the old APIs has not been set yet. +* The :mod:`threading` module API is being changed to use properties + such as :attr:`daemon` instead of :meth:`setDaemon` and + :meth:`isDaemon` methods, and some methods have been renamed to use + underscores instead of camel-case; for example, the + :meth:`activeCount` method is renamed to :meth:`active_count`. Both + the 2.6 and 3.0 versions of the module support the same properties + and renamed methods, but don't remove the old methods. No date has been set + for the deprecation of the old APIs in Python 3.x; the old APIs won't + be removed in any 2.x version. (Carried out by several people, most notably Benjamin Peterson.) The :mod:`threading` module's :class:`Thread` objects @@ -2735,15 +2737,15 @@ of these built-in functions that can be imported when writing The functions in this module currently include: -* ``ascii(*obj*)``: equivalent to :func:`repr`. In Python 3.0, +* ``ascii(obj)``: equivalent to :func:`repr`. In Python 3.0, :func:`repr` will return a Unicode string, while :func:`ascii` will return a pure ASCII bytestring. -* ``filter(*predicate*, *iterable*)``, - ``map(*func*, *iterable1*, ...)``: the 3.0 versions +* ``filter(predicate, iterable)``, + ``map(func, iterable1, ...)``: the 3.0 versions return iterators, unlike the 2.x built-ins which return lists. -* ``hex(*value*)``, ``oct(*value*)``: instead of calling the +* ``hex(value)``, ``oct(value)``: instead of calling the :meth:`__hex__` or :meth:`__oct__` methods, these versions will call the :meth:`__index__` method and convert the result to hexadecimal or octal. :func:`oct` will use the new ``0o`` notation for its @@ -3212,5 +3214,5 @@ Acknowledgements The author would like to thank the following people for offering suggestions, corrections and assistance with various drafts of this article: -Georg Brandl, Steve Brown, Nick Coghlan, Jim Jewett, Antoine Pitrou. +Georg Brandl, Steve Brown, Nick Coghlan, Jim Jewett, Kent Johnson, Antoine Pitrou. |