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r61098 | jeffrey.yasskin | 2008-02-28 05:45:36 +0100 (Thu, 28 Feb 2008) | 7 lines
Move abc._Abstract into object by adding a new flag Py_TPFLAGS_IS_ABSTRACT,
which forbids constructing types that have it set. The effect is to speed
./python.exe -m timeit -s 'import abc' -s 'class Foo(object): __metaclass__ = abc.ABCMeta' 'Foo()'
up from 2.5us to 0.201us. This fixes issue 1762.
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r61099 | jeffrey.yasskin | 2008-02-28 06:53:18 +0100 (Thu, 28 Feb 2008) | 3 lines
Speed test_socketserver up from 28.739s to 0.226s, simplify the logic, and make
sure all tests run even if some fail.
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r61100 | jeffrey.yasskin | 2008-02-28 07:09:19 +0100 (Thu, 28 Feb 2008) | 21 lines
Thread.start() used sleep(0.000001) to make sure it didn't return before the
new thread had started. At least on my MacBook Pro, that wound up sleeping for
a full 10ms (probably 1 jiffy). By using an Event instead, we can be absolutely
certain that the thread has started, and return more quickly (217us).
Before:
$ ./python.exe -m timeit -s 'from threading import Thread' 't = Thread(); t.start(); t.join()'
100 loops, best of 3: 10.3 msec per loop
$ ./python.exe -m timeit -s 'from threading import Thread; t = Thread()' 't.isAlive()'
1000000 loops, best of 3: 0.47 usec per loop
After:
$ ./python.exe -m timeit -s 'from threading import Thread' 't = Thread(); t.start(); t.join()'
1000 loops, best of 3: 217 usec per loop
$ ./python.exe -m timeit -s 'from threading import Thread; t = Thread()' 't.isAlive()'
1000000 loops, best of 3: 0.86 usec per loop
To be fair, the 10ms isn't CPU time, and other threads including the spawned
one get to run during it. There are also some slightly more complicated ways to
get back the .4us in isAlive() if we want.
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r61101 | raymond.hettinger | 2008-02-28 10:23:48 +0100 (Thu, 28 Feb 2008) | 1 line
Add repeat keyword argument to itertools.product().
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r61102 | christian.heimes | 2008-02-28 12:18:49 +0100 (Thu, 28 Feb 2008) | 1 line
The empty tuple is usually a singleton with a much higher refcnt than 1
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| .. | ||
| c-api | ||
| data | ||
| distutils | ||
| documenting | ||
| extending | ||
| howto | ||
| includes | ||
| install | ||
| library | ||
| reference | ||
| tools | ||
| tutorial | ||
| using | ||
| whatsnew | ||
| about.rst | ||
| ACKS.txt | ||
| bugs.rst | ||
| conf.py | ||
| contents.rst | ||
| copyright.rst | ||
| glossary.rst | ||
| license.rst | ||
| make.bat | ||
| Makefile | ||
| README.txt | ||
| TODO.txt | ||
Python Documentation README ~~~~~~~~~~~~~~~~~~~~~~~~~~~ This directory contains the reStructuredText (reST) sources to the Python documentation. You don't need to build them yourself, prebuilt versions are available at http://docs.python.org/download/. Documentation on the authoring Python documentation, including information about both style and markup, is available in the "Documenting Python" chapter of the documentation. There's also a chapter intended to point out differences to those familiar with the previous docs written in LaTeX. Building the docs ================= You need to install Python 2.4 or higher (but Python 3.0 is not supported yet); the toolset used to build the docs are written in Python. The toolset used to build the documentation is called *Sphinx*, it is not included in this tree, but maintained separately in the Python Subversion repository. Also needed are Jinja, a templating engine (included in Sphinx as a Subversion external), and optionally Pygments, a code highlighter. Using make ---------- Luckily, a Makefile has been prepared so that on Unix, provided you have installed Python and Subversion, you can just run :: make html to check out the necessary toolset in the `tools/` subdirectory and build the HTML output files. To view the generated HTML, point your favorite browser at the top-level index `build/html/index.html` after running "make". To use a Python interpreter that's not called ``python``, use the standard way to set Makefile variables, using e.g. :: make html PYTHON=/usr/bin/python2.5 Available make targets are: * "html", which builds standalone HTML files for offline viewing. * "web", which builds files usable with the Sphinx.web application (used to serve the docs online at http://docs.python.org/). * "htmlhelp", which builds HTML files and a HTML Help project file usable to convert them into a single Compiled HTML (.chm) file -- these are popular under Microsoft Windows, but very handy on every platform. To create the CHM file, you need to run the Microsoft HTML Help Workshop over the generated project (.hhp) file. * "latex", which builds LaTeX source files that can be run with "pdflatex" to produce PDF documents. * "linkcheck", which checks all external references to see whether they are broken, redirected or malformed, and outputs this information to stdout as well as a plain-text (.txt) file. * "changes", which builds an overview over all versionadded/versionchanged/ deprecated items in the current version. This is meant as a help for the writer of the "What's New" document. * "coverage", which builds a coverage overview for standard library modules and C API. A "make update" updates the Subversion checkouts in `tools/`. Without make ------------ You'll need to checkout the Sphinx package to the `tools/` directory:: svn co http://svn.python.org/projects/doctools/trunk/sphinx tools/sphinx Then, you need to install Docutils 0.4 (the SVN snapshot won't work), either by checking it out via :: svn co http://svn.python.org/projects/external/docutils-0.4/docutils tools/docutils or by installing it from http://docutils.sf.net/. You can optionally also install Pygments, either as a checkout via :: svn co http://svn.python.org/projects/external/Pygments-0.9/pygments tools/pygments or from PyPI at http://pypi.python.org/pypi/Pygments. Then, make an output directory, e.g. under `build/`, and run :: python tools/sphinx-build.py -b<builder> . build/<outputdirectory> where `<builder>` is one of html, web or htmlhelp (for explanations see the make targets above). Contributing ============ For bugs in the content, the online version at http://docs.python.org/ has a "suggest change" facility that can be used to correct errors in the source text and submit them as a patch to the maintainers. Bugs in the toolset should be reported in the Python bug tracker at http://bugs.python.org/. You can also send a mail to the Python Documentation Team at docs@python.org, and we will process your request as soon as possible. If you want to help the Documentation Team, you are always welcome. Just send a mail to docs@python.org. Copyright notice ================ The Python source is copyrighted, but you can freely use and copy it as long as you don't change or remove the copyright notice: ---------------------------------------------------------------------- Copyright (c) 2000-2007 Python Software Foundation. All rights reserved. Copyright (c) 2000 BeOpen.com. All rights reserved. Copyright (c) 1995-2000 Corporation for National Research Initiatives. All rights reserved. Copyright (c) 1991-1995 Stichting Mathematisch Centrum. All rights reserved. See the file "license.rst" for information on usage and redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. ----------------------------------------------------------------------