=======================
Python was created in the early 1990s by Guido van Rossum at Stichting
-Mathematisch Centrum (CWI, see https://www.cwi.nl/) in the Netherlands as a
+Mathematisch Centrum (CWI, see https://www.cwi.nl) in the Netherlands as a
successor of a language called ABC. Guido remains Python's principal author,
although it includes many contributions from others.
In 1995, Guido continued his work on Python at the Corporation for National
-Research Initiatives (CNRI, see https://www.cnri.reston.va.us/) in Reston,
+Research Initiatives (CNRI, see https://www.cnri.reston.va.us) in Reston,
Virginia where he released several versions of the software.
In May 2000, Guido and the Python core development team moved to BeOpen.com to
form the BeOpen PythonLabs team. In October of the same year, the PythonLabs
-team moved to Digital Creations (now Zope Corporation; see
-https://www.zope.org/). In 2001, the Python Software Foundation (PSF, see
+team moved to Digital Creations, which became
+Zope Corporation. In 2001, the Python Software Foundation (PSF, see
https://www.python.org/psf/) was formed, a non-profit organization created
-specifically to own Python-related Intellectual Property. Zope Corporation is a
+specifically to own Python-related Intellectual Property. Zope Corporation was a
sponsoring member of the PSF.
-All Python releases are Open Source (see https://opensource.org/ for the Open
+All Python releases are Open Source (see https://opensource.org for the Open
Source Definition). Historically, most, but not all, Python releases have also
been GPL-compatible; the table below summarizes the various releases.
-+----------------+--------------+------------+------------+-----------------+
-| Release | Derived from | Year | Owner | GPL compatible? |
-+================+==============+============+============+=================+
-| 0.9.0 thru 1.2 | n/a | 1991-1995 | CWI | yes |
-+----------------+--------------+------------+------------+-----------------+
-| 1.3 thru 1.5.2 | 1.2 | 1995-1999 | CNRI | yes |
-+----------------+--------------+------------+------------+-----------------+
-| 1.6 | 1.5.2 | 2000 | CNRI | no |
-+----------------+--------------+------------+------------+-----------------+
-| 2.0 | 1.6 | 2000 | BeOpen.com | no |
-+----------------+--------------+------------+------------+-----------------+
-| 1.6.1 | 1.6 | 2001 | CNRI | no |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1 | 2.0+1.6.1 | 2001 | PSF | no |
-+----------------+--------------+------------+------------+-----------------+
-| 2.0.1 | 2.0+1.6.1 | 2001 | PSF | yes |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1.1 | 2.1+2.0.1 | 2001 | PSF | yes |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1.2 | 2.1.1 | 2002 | PSF | yes |
-+----------------+--------------+------------+------------+-----------------+
-| 2.1.3 | 2.1.2 | 2002 | PSF | yes |
-+----------------+--------------+------------+------------+-----------------+
-| 2.2 and above | 2.1.1 | 2001-now | PSF | yes |
-+----------------+--------------+------------+------------+-----------------+
++----------------+--------------+------------+------------+---------------------+
+| Release | Derived from | Year | Owner | GPL-compatible? (1) |
++================+==============+============+============+=====================+
+| 0.9.0 thru 1.2 | n/a | 1991-1995 | CWI | yes |
++----------------+--------------+------------+------------+---------------------+
+| 1.3 thru 1.5.2 | 1.2 | 1995-1999 | CNRI | yes |
++----------------+--------------+------------+------------+---------------------+
+| 1.6 | 1.5.2 | 2000 | CNRI | no |
++----------------+--------------+------------+------------+---------------------+
+| 2.0 | 1.6 | 2000 | BeOpen.com | no |
++----------------+--------------+------------+------------+---------------------+
+| 1.6.1 | 1.6 | 2001 | CNRI | yes (2) |
++----------------+--------------+------------+------------+---------------------+
+| 2.1 | 2.0+1.6.1 | 2001 | PSF | no |
++----------------+--------------+------------+------------+---------------------+
+| 2.0.1 | 2.0+1.6.1 | 2001 | PSF | yes |
++----------------+--------------+------------+------------+---------------------+
+| 2.1.1 | 2.1+2.0.1 | 2001 | PSF | yes |
++----------------+--------------+------------+------------+---------------------+
+| 2.1.2 | 2.1.1 | 2002 | PSF | yes |
++----------------+--------------+------------+------------+---------------------+
+| 2.1.3 | 2.1.2 | 2002 | PSF | yes |
++----------------+--------------+------------+------------+---------------------+
+| 2.2 and above | 2.1.1 | 2001-now | PSF | yes |
++----------------+--------------+------------+------------+---------------------+
.. note::
- GPL-compatible doesn't mean that we're distributing Python under the GPL. All
- Python licenses, unlike the GPL, let you distribute a modified version without
- making your changes open source. The GPL-compatible licenses make it possible to
- combine Python with other software that is released under the GPL; the others
- don't.
+ (1) GPL-compatible doesn't mean that we're distributing Python under the GPL.
+ All Python licenses, unlike the GPL, let you distribute a modified version
+ without making your changes open source. The GPL-compatible licenses make
+ it possible to combine Python with other software that is released under
+ the GPL; the others don't.
+
+ (2) According to Richard Stallman, 1.6.1 is not GPL-compatible, because its license
+ has a choice of law clause. According to CNRI, however, Stallman's lawyer has
+ told CNRI's lawyer that 1.6.1 is "not incompatible" with the GPL.
Thanks to the many outside volunteers who have worked under Guido's direction to
make these releases possible.
============================================================
Python software and documentation are licensed under the
-:ref:`PSF License Agreement <PSF-license>`.
+Python Software Foundation License Version 2.
Starting with Python 3.8.6, examples, recipes, and other code in
-the documentation are dual licensed under the PSF License Agreement
+the documentation are dual licensed under the PSF License Version 2
and the :ref:`Zero-Clause BSD license <BSD0>`.
Some software incorporated into Python is under different licenses.
.. _PSF-license:
-PSF LICENSE AGREEMENT FOR PYTHON |release|
-------------------------------------------
+PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+--------------------------------------------
.. parsed-literal::
1. This LICENSE AGREEMENT is between the Python Software Foundation ("PSF"), and
- the Individual or Organization ("Licensee") accessing and otherwise using Python
- |release| software in source or binary form and its associated documentation.
+ the Individual or Organization ("Licensee") accessing and otherwise using this
+ software ("Python") in source or binary form and its associated documentation.
2. Subject to the terms and conditions of this License Agreement, PSF hereby
grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
analyze, test, perform and/or display publicly, prepare derivative works,
- distribute, and otherwise use Python |release| alone or in any derivative
+ distribute, and otherwise use Python alone or in any derivative
version, provided, however, that PSF's License Agreement and PSF's notice of
copyright, i.e., "Copyright © 2001-2024 Python Software Foundation; All Rights
- Reserved" are retained in Python |release| alone or in any derivative version
+ Reserved" are retained in Python alone or in any derivative version
prepared by Licensee.
3. In the event Licensee prepares a derivative work that is based on or
- incorporates Python |release| or any part thereof, and wants to make the
+ incorporates Python or any part thereof, and wants to make the
derivative work available to others as provided herein, then Licensee hereby
- agrees to include in any such work a brief summary of the changes made to Python
- |release|.
+ agrees to include in any such work a brief summary of the changes made to Python.
- 4. PSF is making Python |release| available to Licensee on an "AS IS" basis.
+ 4. PSF is making Python available to Licensee on an "AS IS" basis.
PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF
EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND DISCLAIMS ANY REPRESENTATION OR
WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE
- USE OF PYTHON |release| WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
+ USE OF PYTHON WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
- 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON |release|
+ 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF
- MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON |release|, OR ANY DERIVATIVE
+ MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, OR ANY DERIVATIVE
THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
6. This License Agreement will automatically terminate upon a material breach of
trademark sense to endorse or promote products or services of Licensee, or any
third party.
- 8. By copying, installing or otherwise using Python |release|, Licensee agrees
+ 8. By copying, installing or otherwise using Python, Licensee agrees
to be bound by the terms and conditions of this License Agreement.
Agreement. This Agreement together with Python 1.6.1 may be located on the
internet using the following unique, persistent identifier (known as a handle):
1895.22/1013. This Agreement may also be obtained from a proxy server on the
- internet using the following URL: http://hdl.handle.net/1895.22/1013."
+ internet using the following URL: http://hdl.handle.net/1895.22/1013".
3. In the event Licensee prepares a derivative work that is based on or
incorporates Python 1.6.1 or any part thereof, and wants to make the derivative
.. _BSD0:
-ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON |release| DOCUMENTATION
-----------------------------------------------------------------------
+ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON DOCUMENTATION
+------------------------------------------------------------
.. parsed-literal::
projects / thirdparty / Python / cpython.git / commitdiff
