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| author | R David Murray <rdmurray@bitdance.com> | 2014-01-08 22:21:22 (GMT) |
|---|---|---|
| committer | R David Murray <rdmurray@bitdance.com> | 2014-01-08 22:21:22 (GMT) |
| commit | 66bf12a58e08914847d2739a0307780a352e883d (patch) | |
| tree | 4d1e60dc2db410517884b55896c3a14677dd75fd | |
| parent | 6f17deb9bb8d681c590b21166b39fc5f42d07cfc (diff) | |
| download | cpython-66bf12a58e08914847d2739a0307780a352e883d.zip cpython-66bf12a58e08914847d2739a0307780a352e883d.tar.gz cpython-66bf12a58e08914847d2739a0307780a352e883d.tar.bz2 | |
whatsnew: FileIO.readall performance, os.cpu_count.
And more news item tweaks.
| -rw-r--r-- | Doc/whatsnew/3.4.rst | 12 | ||||
| -rw-r--r-- | Misc/NEWS | 10 |
2 files changed, 18 insertions, 4 deletions
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst index 820d0cb..cac02f1 100644 --- a/Doc/whatsnew/3.4.rst +++ b/Doc/whatsnew/3.4.rst @@ -853,6 +853,11 @@ descriptors or a Windows handle: * :func:`os.get_inheritable`, :func:`os.set_inheritable` * :func:`os.get_handle_inheritable`, :func:`os.set_handle_inheritable` +The :mod:`os` module now provides a :func:`~os.cpu_count` function, analogous to +the :func:`multiprocessing.cpu_count` function (which is now implemented in +terms of the new :mod:`os` function). (Contributed by Trent Nelson, Yogesh +Chaudhari, Victor Stinner, and Charles-François Natali in :issue:`17914`.) + pdb --- @@ -985,6 +990,8 @@ The ``socket.AF_*`` and ``socket.SOCK_*`` constants are now enumeration values using the new :mod:`enum` module. This allows meaningful names to be printed during debugging, instead of integer "magic numbers". +The :data:`~socket.AF_LINK` constant is now available on BSD and OSX. + sqlite3 ------- @@ -1341,6 +1348,11 @@ Significant Optimizations strings is now significantly faster. (Contributed by Victor Stinner and Antoine Pitrou in :issue:`15596`.) +* A performance issue in :meth:`io.FileIO.readall` has been solved. This + particularly affects Windows, and significantly speeds up the case of piping + significant amounts of data through :mod:`subprocess`. (Contributed + by Richard Oudkerk in :issue:`15758`.) + Deprecated @@ -2163,9 +2163,11 @@ Library - Issue #15758: Fix FileIO.readall() so it no longer has O(n**2) complexity. -- Issue #14596: The struct.Struct() objects now use more compact implementation. +- Issue #14596: The struct.Struct() objects now use a more compact + implementation. -- Issue #17981: Closed socket on error in SysLogHandler. +- Issue #17981: logging's SysLogHandler now closes the socket when it catches + socket OSErrors. - Issue #17964: Fix os.sysconf(): the return type of the C sysconf() function is long, not int. @@ -2186,8 +2188,8 @@ Library - Issue #17915: Fix interoperability of xml.sax with file objects returned by codecs.open(). -- Issue #16601: Restarting iteration over tarfile no more continues from where - it left off. Patch by Michael Birtwell. +- Issue #16601: Restarting iteration over tarfile really restarts rather + than continuing from where it left off. Patch by Michael Birtwell. - Issue #17289: The readline module now plays nicer with external modules or applications changing the rl_completer_word_break_characters global |