@@ -11,59 +11,63 @@ History of the software
1111=======================
1212
1313Python was created in the early 1990s by Guido van Rossum at Stichting
14- Mathematisch Centrum (CWI, see https://www.cwi.nl/ ) in the Netherlands as a
14+ Mathematisch Centrum (CWI, see https://www.cwi.nl) in the Netherlands as a
1515successor of a language called ABC. Guido remains Python's principal author,
1616although it includes many contributions from others.
1717
1818In 1995, Guido continued his work on Python at the Corporation for National
19- Research Initiatives (CNRI, see https://www.cnri.reston.va.us/ ) in Reston,
19+ Research Initiatives (CNRI, see https://www.cnri.reston.va.us) in Reston,
2020Virginia where he released several versions of the software.
2121
2222In May 2000, Guido and the Python core development team moved to BeOpen.com to
2323form the BeOpen PythonLabs team. In October of the same year, the PythonLabs
24- team moved to Digital Creations (now Zope Corporation; see
25- https://www.zope.org/) . In 2001, the Python Software Foundation (PSF, see
24+ team moved to Digital Creations, which became
25+ Zope Corporation . In 2001, the Python Software Foundation (PSF, see
2626https://www.python.org/psf/) was formed, a non-profit organization created
27- specifically to own Python-related Intellectual Property. Zope Corporation is a
27+ specifically to own Python-related Intellectual Property. Zope Corporation was a
2828sponsoring member of the PSF.
2929
30- All Python releases are Open Source (see https://opensource.org/ for the Open
30+ All Python releases are Open Source (see https://opensource.org for the Open
3131Source Definition). Historically, most, but not all, Python releases have also
3232been GPL-compatible; the table below summarizes the various releases.
3333
34- +----------------+--------------+------------+------------+-----------------+
35- | Release | Derived from | Year | Owner | GPL compatible? |
36- +================+==============+============+============+=================+
37- | 0.9.0 thru 1.2 | n/a | 1991-1995 | CWI | yes |
38- +----------------+--------------+------------+------------+-----------------+
39- | 1.3 thru 1.5.2 | 1.2 | 1995-1999 | CNRI | yes |
40- +----------------+--------------+------------+------------+-----------------+
41- | 1.6 | 1.5.2 | 2000 | CNRI | no |
42- +----------------+--------------+------------+------------+-----------------+
43- | 2.0 | 1.6 | 2000 | BeOpen.com | no |
44- +----------------+--------------+------------+------------+-----------------+
45- | 1.6.1 | 1.6 | 2001 | CNRI | no |
46- +----------------+--------------+------------+------------+-----------------+
47- | 2.1 | 2.0+1.6.1 | 2001 | PSF | no |
48- +----------------+--------------+------------+------------+-----------------+
49- | 2.0.1 | 2.0+1.6.1 | 2001 | PSF | yes |
50- +----------------+--------------+------------+------------+-----------------+
51- | 2.1.1 | 2.1+2.0.1 | 2001 | PSF | yes |
52- +----------------+--------------+------------+------------+-----------------+
53- | 2.1.2 | 2.1.1 | 2002 | PSF | yes |
54- +----------------+--------------+------------+------------+-----------------+
55- | 2.1.3 | 2.1.2 | 2002 | PSF | yes |
56- +----------------+--------------+------------+------------+-----------------+
57- | 2.2 and above | 2.1.1 | 2001-now | PSF | yes |
58- +----------------+--------------+------------+------------+-----------------+
34+ +----------------+--------------+------------+------------+--------------------- +
35+ | Release | Derived from | Year | Owner | GPL- compatible? (1) |
36+ +================+==============+============+============+===================== +
37+ | 0.9.0 thru 1.2 | n/a | 1991-1995 | CWI | yes |
38+ +----------------+--------------+------------+------------+--------------------- +
39+ | 1.3 thru 1.5.2 | 1.2 | 1995-1999 | CNRI | yes |
40+ +----------------+--------------+------------+------------+--------------------- +
41+ | 1.6 | 1.5.2 | 2000 | CNRI | no |
42+ +----------------+--------------+------------+------------+--------------------- +
43+ | 2.0 | 1.6 | 2000 | BeOpen.com | no |
44+ +----------------+--------------+------------+------------+--------------------- +
45+ | 1.6.1 | 1.6 | 2001 | CNRI | yes (2) |
46+ +----------------+--------------+------------+------------+--------------------- +
47+ | 2.1 | 2.0+1.6.1 | 2001 | PSF | no |
48+ +----------------+--------------+------------+------------+--------------------- +
49+ | 2.0.1 | 2.0+1.6.1 | 2001 | PSF | yes |
50+ +----------------+--------------+------------+------------+--------------------- +
51+ | 2.1.1 | 2.1+2.0.1 | 2001 | PSF | yes |
52+ +----------------+--------------+------------+------------+--------------------- +
53+ | 2.1.2 | 2.1.1 | 2002 | PSF | yes |
54+ +----------------+--------------+------------+------------+--------------------- +
55+ | 2.1.3 | 2.1.2 | 2002 | PSF | yes |
56+ +----------------+--------------+------------+------------+--------------------- +
57+ | 2.2 and above | 2.1.1 | 2001-now | PSF | yes |
58+ +----------------+--------------+------------+------------+--------------------- +
5959
6060.. note ::
6161
62- GPL-compatible doesn't mean that we're distributing Python under the GPL. All
63- Python licenses, unlike the GPL, let you distribute a modified version without
64- making your changes open source. The GPL-compatible licenses make it possible to
65- combine Python with other software that is released under the GPL; the others
66- don't.
62+ (1) GPL-compatible doesn't mean that we're distributing Python under the GPL.
63+ All Python licenses, unlike the GPL, let you distribute a modified version
64+ without making your changes open source. The GPL-compatible licenses make
65+ it possible to combine Python with other software that is released under
66+ the GPL; the others don't.
67+
68+ (2) According to Richard Stallman, 1.6.1 is not GPL-compatible, because its license
69+ has a choice of law clause. According to CNRI, however, Stallman's lawyer has
70+ told CNRI's lawyer that 1.6.1 is "not incompatible" with the GPL.
6771
6872Thanks to the many outside volunteers who have worked under Guido's direction to
6973make these releases possible.
@@ -73,10 +77,10 @@ Terms and conditions for accessing or otherwise using Python
7377============================================================
7478
7579Python software and documentation are licensed under the
76- :ref: ` PSF License Agreement < PSF-license >` .
80+ Python Software Foundation License Version 2 .
7781
7882Starting with Python 3.8.6, examples, recipes, and other code in
79- the documentation are dual licensed under the PSF License Agreement
83+ the documentation are dual licensed under the PSF License Version 2
8084and the :ref: `Zero-Clause BSD license <BSD0 >`.
8185
8286Some software incorporated into Python is under different licenses.
@@ -86,39 +90,38 @@ See :ref:`OtherLicenses` for an incomplete list of these licenses.
8690
8791.. _PSF-license :
8892
89- PSF LICENSE AGREEMENT FOR PYTHON | release |
90- ------------------------------------------
93+ PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
94+ --------------------------------------------
9195
9296.. parsed-literal ::
9397
9498 1. This LICENSE AGREEMENT is between the Python Software Foundation ("PSF"), and
95- the Individual or Organization ("Licensee") accessing and otherwise using Python
96- | release | software in source or binary form and its associated documentation.
99+ the Individual or Organization ("Licensee") accessing and otherwise using this
100+ software ("Python") in source or binary form and its associated documentation.
97101
98102 2. Subject to the terms and conditions of this License Agreement, PSF hereby
99103 grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
100104 analyze, test, perform and/or display publicly, prepare derivative works,
101- distribute, and otherwise use Python | release | alone or in any derivative
105+ distribute, and otherwise use Python alone or in any derivative
102106 version, provided, however, that PSF's License Agreement and PSF's notice of
103107 copyright, i.e., "Copyright © 2001-2023 Python Software Foundation; All Rights
104- Reserved" are retained in Python | release | alone or in any derivative version
108+ Reserved" are retained in Python alone or in any derivative version
105109 prepared by Licensee.
106110
107111 3. In the event Licensee prepares a derivative work that is based on or
108- incorporates Python | release | or any part thereof, and wants to make the
112+ incorporates Python or any part thereof, and wants to make the
109113 derivative work available to others as provided herein, then Licensee hereby
110- agrees to include in any such work a brief summary of the changes made to Python
111- |release |.
114+ agrees to include in any such work a brief summary of the changes made to Python.
112115
113- 4. PSF is making Python | release | available to Licensee on an "AS IS" basis.
116+ 4. PSF is making Python available to Licensee on an "AS IS" basis.
114117 PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF
115118 EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND DISCLAIMS ANY REPRESENTATION OR
116119 WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE
117- USE OF PYTHON | release | WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
120+ USE OF PYTHON WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
118121
119- 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON | release |
122+ 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
120123 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF
121- MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON | release | , OR ANY DERIVATIVE
124+ MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, OR ANY DERIVATIVE
122125 THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
123126
124127 6. This License Agreement will automatically terminate upon a material breach of
@@ -130,7 +133,7 @@ PSF LICENSE AGREEMENT FOR PYTHON |release|
130133 trademark sense to endorse or promote products or services of Licensee, or any
131134 third party.
132135
133- 8. By copying, installing or otherwise using Python | release | , Licensee agrees
136+ 8. By copying, installing or otherwise using Python, Licensee agrees
134137 to be bound by the terms and conditions of this License Agreement.
135138
136139
@@ -205,7 +208,7 @@ CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
205208 Agreement. This Agreement together with Python 1.6.1 may be located on the
206209 internet using the following unique, persistent identifier (known as a handle):
207210 1895.22/1013. This Agreement may also be obtained from a proxy server on the
208- internet using the following URL: http://hdl.handle.net/1895.22/1013."
211+ internet using the following URL: http://hdl.handle.net/1895.22/1013".
209212
210213 3. In the event Licensee prepares a derivative work that is based on or
211214 incorporates Python 1.6.1 or any part thereof, and wants to make the derivative
@@ -273,8 +276,8 @@ CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
273276
274277 .. _BSD0 :
275278
276- ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON | release | DOCUMENTATION
277- ----------------------------------------------------------------------
279+ ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON DOCUMENTATION
280+ ------------------------------------------------------------
278281
279282.. parsed-literal ::
280283
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