Backport master's README.rst to 3.6 (GH-86)
Includes GH-2, GH-70, GH-73 (GH-79), and GH-21.
This commit is contained in:
Zachary Ware
GitHub
parent
7d5587e687
commit
1e8cc88a48
242
README
242
README
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@ -1,242 +0,0 @@
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|||
This is Python version 3.6.1 release candidate 1
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================================================
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Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
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2012, 2013, 2014, 2015, 2016, 2017 Python Software Foundation. All rights
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reserved.
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Python 3.x is a new version of the language, which is incompatible with the
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2.x line of releases. The language is mostly the same, but many details,
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especially how built-in objects like dictionaries and strings work,
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have changed considerably, and a lot of deprecated features have finally
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been removed.
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Using Python
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------------
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Installable Python kits, and information about using Python, are available at
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`python.org`_.
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.. _python.org: https://www.python.org/
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Build Instructions
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------------------
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On Unix, Linux, BSD, OSX, and Cygwin:
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./configure
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make
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make test
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sudo make install
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This will install Python as python3.
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You can pass many options to the configure script; run "./configure --help" to
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find out more. On OSX and Cygwin, the executable is called python.exe;
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elsewhere it's just python.
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On Mac OS X, if you have configured Python with --enable-framework, you should
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use "make frameworkinstall" to do the installation. Note that this installs the
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Python executable in a place that is not normally on your PATH, you may want to
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set up a symlink in /usr/local/bin.
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On Windows, see PCbuild/readme.txt.
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If you wish, you can create a subdirectory and invoke configure from there.
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For example:
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mkdir debug
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cd debug
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../configure --with-pydebug
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make
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make test
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(This will fail if you *also* built at the top-level directory.
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You should do a "make clean" at the toplevel first.)
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To get an optimized build of Python, "configure --enable-optimizations" before
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you run make. This sets the default make targets up to enable Profile Guided
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Optimization (PGO) and may be used to auto-enable Link Time Optimization (LTO)
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on some platforms. For more details, see the sections bellow.
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Profile Guided Optimization
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---------------------------
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PGO takes advantage of recent versions of the GCC or Clang compilers.
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If ran, "make profile-opt" will do several steps.
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First, the entire Python directory is cleaned of temporary files that
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may have resulted in a previous compilation.
|
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Then, an instrumented version of the interpreter is built, using suitable
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compiler flags for each flavour. Note that this is just an intermediary
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step and the binary resulted after this step is not good for real life
|
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workloads, as it has profiling instructions embedded inside.
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|
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After this instrumented version of the interpreter is built, the Makefile
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will automatically run a training workload. This is necessary in order to
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profile the interpreter execution. Note also that any output, both stdout
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and stderr, that may appear at this step is suppressed.
|
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Finally, the last step is to rebuild the interpreter, using the information
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collected in the previous one. The end result will be a Python binary
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that is optimized and suitable for distribution or production installation.
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Link Time Optimization
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----------------------
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Enabled via configure's --with-lto flag. LTO takes advantages of recent
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compiler toolchains ability to optimize across the otherwise arbitrary .o file
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boundary when building final executables or shared libraries for additional
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performance gains.
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What's New
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----------
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We have a comprehensive overview of the changes in the "What's New in
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Python 3.6" document, found at
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https://docs.python.org/3.6/whatsnew/3.6.html
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For a more detailed change log, read Misc/NEWS (though this file, too,
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is incomplete, and also doesn't list anything merged in from the 2.7
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release under development).
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If you want to install multiple versions of Python see the section below
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entitled "Installing multiple versions".
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Documentation
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-------------
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Documentation for Python 3.6 is online, updated daily:
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https://docs.python.org/3.6/
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It can also be downloaded in many formats for faster access. The documentation
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is downloadable in HTML, PDF, and reStructuredText formats; the latter version
|
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is primarily for documentation authors, translators, and people with special
|
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formatting requirements.
|
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If you would like to contribute to the development of Python, relevant
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documentation is available at:
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https://docs.python.org/devguide/
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For information about building Python's documentation, refer to Doc/README.txt.
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Converting From Python 2.x to 3.x
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---------------------------------
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Python starting with 2.6 contains features to help locating code that needs to
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be changed, such as optional warnings when deprecated features are used, and
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backported versions of certain key Python 3.x features.
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A source-to-source translation tool, "2to3", can take care of the mundane task
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of converting large amounts of source code. It is not a complete solution but
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is complemented by the deprecation warnings in 2.6. See
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https://docs.python.org/3.6/library/2to3.html for more information.
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Testing
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-------
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To test the interpreter, type "make test" in the top-level directory.
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The test set produces some output. You can generally ignore the messages
|
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about skipped tests due to optional features which can't be imported.
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If a message is printed about a failed test or a traceback or core dump
|
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is produced, something is wrong.
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By default, tests are prevented from overusing resources like disk space and
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memory. To enable these tests, run "make testall".
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IMPORTANT: If the tests fail and you decide to mail a bug report, *don't*
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include the output of "make test". It is useless. Run the failing test
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manually, as follows:
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./python -m test -v test_whatever
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(substituting the top of the source tree for '.' if you built in a different
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directory). This runs the test in verbose mode.
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Installing multiple versions
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----------------------------
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On Unix and Mac systems if you intend to install multiple versions of Python
|
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using the same installation prefix (--prefix argument to the configure script)
|
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you must take care that your primary python executable is not overwritten by the
|
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installation of a different version. All files and directories installed using
|
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"make altinstall" contain the major and minor version and can thus live
|
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side-by-side. "make install" also creates ${prefix}/bin/python3 which refers to
|
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${prefix}/bin/pythonX.Y. If you intend to install multiple versions using the
|
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same prefix you must decide which version (if any) is your "primary" version.
|
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Install that version using "make install". Install all other versions using
|
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"make altinstall".
|
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|
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For example, if you want to install Python 2.7, 3.5, and 3.6 with 3.6 being the
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primary version, you would execute "make install" in your 3.6 build directory
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and "make altinstall" in the others.
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Issue Tracker and Mailing List
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------------------------------
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We're soliciting bug reports about all aspects of the language. Fixes are also
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welcome, preferably in unified diff format. Please use the issue tracker:
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https://bugs.python.org/
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If you're not sure whether you're dealing with a bug or a feature, use the
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mailing list:
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python-dev@python.org
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To subscribe to the list, use the mailman form:
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https://mail.python.org/mailman/listinfo/python-dev/
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Proposals for enhancement
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-------------------------
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If you have a proposal to change Python, you may want to send an email to the
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comp.lang.python or `python-ideas`_ mailing lists for initial feedback. A Python
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Enhancement Proposal (PEP) may be submitted if your idea gains ground. All
|
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current PEPs, as well as guidelines for submitting a new PEP, are listed at
|
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https://www.python.org/dev/peps/.
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.. _python-ideas: https://mail.python.org/mailman/listinfo/python-ideas/
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Release Schedule
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----------------
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See PEP 494 for release details: https://www.python.org/dev/peps/pep-0494/
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Copyright and License Information
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---------------------------------
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Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
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2012, 2013, 2014, 2015, 2016 Python Software Foundation. All rights reserved.
|
||||
|
||||
Copyright (c) 2000 BeOpen.com. All rights reserved.
|
||||
|
||||
Copyright (c) 1995-2001 Corporation for National Research Initiatives. All
|
||||
rights reserved.
|
||||
|
||||
Copyright (c) 1991-1995 Stichting Mathematisch Centrum. All rights reserved.
|
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See the file "LICENSE" for information on the history of this software,
|
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terms & conditions for usage, and a DISCLAIMER OF ALL WARRANTIES.
|
||||
|
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This Python distribution contains *no* GNU General Public License (GPL) code,
|
||||
so it may be used in proprietary projects. There are interfaces to some GNU
|
||||
code but these are entirely optional.
|
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|
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All trademarks referenced herein are property of their respective holders.
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@ -0,0 +1,235 @@
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This is Python version 3.6.1 release candidate 1
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================================================
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.. image:: https://travis-ci.org/python/cpython.svg?branch=3.6
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:alt: CPython build status on Travis CI
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:target: https://travis-ci.org/python/cpython
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.. image:: https://codecov.io/gh/python/cpython/branch/3.6/graph/badge.svg
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:alt: CPython code coverage on Codecov
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:target: https://codecov.io/gh/python/cpython
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Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
|
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2012, 2013, 2014, 2015, 2016, 2017 Python Software Foundation. All rights
|
||||
reserved.
|
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See the end of this file for further copyright and license information.
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||||
|
||||
|
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Using Python
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------------
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|
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Installable Python kits, and information about using Python, are available at
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`python.org`_.
|
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|
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.. _python.org: https://www.python.org/
|
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Build Instructions
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------------------
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On Unix, Linux, BSD, OSX, and Cygwin::
|
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|
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./configure
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make
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make test
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sudo make install
|
||||
|
||||
This will install Python as python3.
|
||||
|
||||
You can pass many options to the configure script; run ``./configure --help``
|
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to find out more. On OSX and Cygwin, the executable is called ``python.exe``;
|
||||
elsewhere it's just ``python``.
|
||||
|
||||
On Mac OS X, if you have configured Python with ``--enable-framework``, you
|
||||
should use ``make frameworkinstall`` to do the installation. Note that this
|
||||
installs the Python executable in a place that is not normally on your PATH,
|
||||
you may want to set up a symlink in ``/usr/local/bin``.
|
||||
|
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On Windows, see `PCbuild/readme.txt
|
||||
<https://github.com/python/cpython/blob/3.6/PCbuild/readme.txt>`_.
|
||||
|
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If you wish, you can create a subdirectory and invoke configure from there.
|
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For example::
|
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|
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mkdir debug
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cd debug
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../configure --with-pydebug
|
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make
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make test
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||||
|
||||
(This will fail if you *also* built at the top-level directory. You should do
|
||||
a ``make clean`` at the toplevel first.)
|
||||
|
||||
To get an optimized build of Python, ``configure --enable-optimizations``
|
||||
before you run ``make``. This sets the default make targets up to enable
|
||||
Profile Guided Optimization (PGO) and may be used to auto-enable Link Time
|
||||
Optimization (LTO) on some platforms. For more details, see the sections
|
||||
below.
|
||||
|
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|
||||
Profile Guided Optimization
|
||||
---------------------------
|
||||
|
||||
PGO takes advantage of recent versions of the GCC or Clang compilers. If ran,
|
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``make profile-opt`` will do several steps.
|
||||
|
||||
First, the entire Python directory is cleaned of temporary files that may have
|
||||
resulted in a previous compilation.
|
||||
|
||||
Then, an instrumented version of the interpreter is built, using suitable
|
||||
compiler flags for each flavour. Note that this is just an intermediary step
|
||||
and the binary resulted after this step is not good for real life workloads, as
|
||||
it has profiling instructions embedded inside.
|
||||
|
||||
After this instrumented version of the interpreter is built, the Makefile will
|
||||
automatically run a training workload. This is necessary in order to profile
|
||||
the interpreter execution. Note also that any output, both stdout and stderr,
|
||||
that may appear at this step is suppressed.
|
||||
|
||||
Finally, the last step is to rebuild the interpreter, using the information
|
||||
collected in the previous one. The end result will be a Python binary that is
|
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optimized and suitable for distribution or production installation.
|
||||
|
||||
|
||||
Link Time Optimization
|
||||
----------------------
|
||||
|
||||
Enabled via configure's ``--with-lto`` flag. LTO takes advantage of the
|
||||
ability of recent compiler toolchains to optimize across the otherwise
|
||||
arbitrary ``.o`` file boundary when building final executables or shared
|
||||
libraries for additional performance gains.
|
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|
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|
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What's New
|
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----------
|
||||
|
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We have a comprehensive overview of the changes in the `What's New in Python
|
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3.6 <https://docs.python.org/3.6/whatsnew/3.6.html>`_ document. For a more
|
||||
detailed change log, read `Misc/NEWS
|
||||
<https://github.com/python/cpython/blob/3.6/Misc/NEWS>`_, but a full
|
||||
accounting of changes can only be gleaned from the `commit history
|
||||
<https://github.com/python/cpython/commits/3.6>`_.
|
||||
|
||||
If you want to install multiple versions of Python see the section below
|
||||
entitled "Installing multiple versions".
|
||||
|
||||
|
||||
Documentation
|
||||
-------------
|
||||
|
||||
`Documentation for Python 3.6 <https://docs.python.org/3.6/>`_ is online,
|
||||
updated daily.
|
||||
|
||||
It can also be downloaded in many formats for faster access. The documentation
|
||||
is downloadable in HTML, PDF, and reStructuredText formats; the latter version
|
||||
is primarily for documentation authors, translators, and people with special
|
||||
formatting requirements.
|
||||
|
||||
If you would like to contribute to the development of Python, relevant
|
||||
documentation is available in the `Python Developer's Guide
|
||||
<https://docs.python.org/devguide/>`_.
|
||||
|
||||
For information about building Python's documentation, refer to `Doc/README.txt
|
||||
<https://github.com/python/cpython/blob/3.6/Doc/README.txt>`_.
|
||||
|
||||
|
||||
Converting From Python 2.x to 3.x
|
||||
---------------------------------
|
||||
|
||||
Significant backward incompatible changes were made for the release of Python
|
||||
3.0, which may cause programs written for Python 2 to fail when run with Python
|
||||
3. For more information about porting your code from Python 2 to Python 3, see
|
||||
the `Porting HOWTO <https://docs.python.org/3/howto/pyporting.html>`_.
|
||||
|
||||
|
||||
Testing
|
||||
-------
|
||||
|
||||
To test the interpreter, type ``make test`` in the top-level directory. The
|
||||
test set produces some output. You can generally ignore the messages about
|
||||
skipped tests due to optional features which can't be imported. If a message
|
||||
is printed about a failed test or a traceback or core dump is produced,
|
||||
something is wrong.
|
||||
|
||||
By default, tests are prevented from overusing resources like disk space and
|
||||
memory. To enable these tests, run ``make testall``.
|
||||
|
||||
If any tests fail, you can re-run the failing test(s) in verbose mode::
|
||||
|
||||
make test TESTOPTS="-v test_that_failed"
|
||||
|
||||
If the failure persists and appears to be a problem with Python rather than
|
||||
your environment, you can `file a bug report <https://bugs.python.org>`_ and
|
||||
include relevant output from that command to show the issue.
|
||||
|
||||
|
||||
Installing multiple versions
|
||||
----------------------------
|
||||
|
||||
On Unix and Mac systems if you intend to install multiple versions of Python
|
||||
using the same installation prefix (``--prefix`` argument to the configure
|
||||
script) you must take care that your primary python executable is not
|
||||
overwritten by the installation of a different version. All files and
|
||||
directories installed using ``make altinstall`` contain the major and minor
|
||||
version and can thus live side-by-side. ``make install`` also creates
|
||||
``${prefix}/bin/python3`` which refers to ``${prefix}/bin/pythonX.Y``. If you
|
||||
intend to install multiple versions using the same prefix you must decide which
|
||||
version (if any) is your "primary" version. Install that version using ``make
|
||||
install``. Install all other versions using ``make altinstall``.
|
||||
|
||||
For example, if you want to install Python 2.7, 3.5, and 3.6 with 3.6 being the
|
||||
primary version, you would execute ``make install`` in your 3.6 build directory
|
||||
and ``make altinstall`` in the others.
|
||||
|
||||
|
||||
Issue Tracker and Mailing List
|
||||
------------------------------
|
||||
|
||||
Bug reports are welcome! You can use the `issue tracker
|
||||
<https://bugs.python.org>`_ to report bugs, and/or submit pull requests `on
|
||||
GitHub <https://github.com/python/cpython>`_.
|
||||
|
||||
You can also follow development discussion on the `python-dev mailing list
|
||||
<https://mail.python.org/mailman/listinfo/python-dev/>`_.
|
||||
|
||||
|
||||
Proposals for enhancement
|
||||
-------------------------
|
||||
|
||||
If you have a proposal to change Python, you may want to send an email to the
|
||||
comp.lang.python or `python-ideas`_ mailing lists for initial feedback. A
|
||||
Python Enhancement Proposal (PEP) may be submitted if your idea gains ground.
|
||||
All current PEPs, as well as guidelines for submitting a new PEP, are listed at
|
||||
`python.org/dev/peps/ <https://www.python.org/dev/peps/>`_.
|
||||
|
||||
.. _python-ideas: https://mail.python.org/mailman/listinfo/python-ideas/
|
||||
|
||||
|
||||
Release Schedule
|
||||
----------------
|
||||
|
||||
See :pep:`494` for Python 3.6 release details.
|
||||
|
||||
|
||||
Copyright and License Information
|
||||
---------------------------------
|
||||
|
||||
Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
|
||||
2012, 2013, 2014, 2015, 2016 Python Software Foundation. All rights reserved.
|
||||
|
||||
Copyright (c) 2000 BeOpen.com. All rights reserved.
|
||||
|
||||
Copyright (c) 1995-2001 Corporation for National Research Initiatives. All
|
||||
rights reserved.
|
||||
|
||||
Copyright (c) 1991-1995 Stichting Mathematisch Centrum. All rights reserved.
|
||||
|
||||
See the file "LICENSE" for information on the history of this software, terms &
|
||||
conditions for usage, and a DISCLAIMER OF ALL WARRANTIES.
|
||||
|
||||
This Python distribution contains *no* GNU General Public License (GPL) code,
|
||||
so it may be used in proprietary projects. There are interfaces to some GNU
|
||||
code but these are entirely optional.
|
||||
|
||||
All trademarks referenced herein are property of their respective holders.
|
||||
Loading…
Reference in New Issue