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Guido van Rossum3225c1f2001-03-22 15:41:06 +00001A. HISTORY OF THE SOFTWARE
2==========================
Guido van Rossumea70b492000-09-01 19:51:14 +00003
4Python was created in the early 1990s by Guido van Rossum at Stichting
Guido van Rossum7b4dd762001-07-17 20:14:06 +00005Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
6as a successor of a language called ABC. Guido remains Python's
7principal author, although it includes many contributions from others.
Guido van Rossum3225c1f2001-03-22 15:41:06 +00008
Guido van Rossum7b4dd762001-07-17 20:14:06 +00009In 1995, Guido continued his work on Python at the Corporation for
10National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
11in Reston, Virginia where he released several versions of the
12software.
Guido van Rossumea70b492000-09-01 19:51:14 +000013
Guido van Rossum7b4dd762001-07-17 20:14:06 +000014In May 2000, Guido and the Python core development team moved to
15BeOpen.com to form the BeOpen PythonLabs team. In October of the same
Guido van Rossum2e1c09c2002-04-04 17:52:50 +000016year, the PythonLabs team moved to Digital Creations (now Zope
17Corporation, see http://www.zope.com). In 2001, the Python Software
18Foundation (PSF, see http://www.python.org/psf/) was formed, a
19non-profit organization created specifically to own Python-related
20Intellectual Property. Zope Corporation is a sponsoring member of
21the PSF.
Guido van Rossum7b4dd762001-07-17 20:14:06 +000022
23All Python releases are Open Source (see http://www.opensource.org for
24the Open Source Definition). Historically, most, but not all, Python
25releases have also been GPL-compatible; the table below summarizes
26the various releases.
27
28 Release Derived Year Owner GPL-
29 from compatible? (1)
30
31 0.9.0 thru 1.2 1991-1995 CWI yes
32 1.3 thru 1.5.2 1.2 1995-1999 CNRI yes
33 1.6 1.5.2 2000 CNRI no
34 2.0 1.6 2000 BeOpen.com no
Guido van Rossum7df772b2002-04-11 20:54:35 +000035 1.6.1 1.6 2001 CNRI yes (2)
Guido van Rossum7b4dd762001-07-17 20:14:06 +000036 2.1 2.0+1.6.1 2001 PSF no
37 2.0.1 2.0+1.6.1 2001 PSF yes
38 2.1.1 2.1+2.0.1 2001 PSF yes
39 2.2 2.1.1 2001 PSF yes
Tim Petersb0f3cea2002-04-08 21:36:47 +000040 2.1.2 2.1.1 2002 PSF yes
41 2.1.3 2.1.2 2002 PSF yes
42 2.2.1 2.2 2002 PSF yes
Guido van Rossum7b4dd762001-07-17 20:14:06 +000043
44Footnotes:
45
46(1) GPL-compatible doesn't mean that we're distributing Python under
47 the GPL. All Python licenses, unlike the GPL, let you distribute
48 a modified version without making your changes open source. The
49 GPL-compatible licenses make it possible to combine Python with
50 other software that is released under the GPL; the others don't.
Guido van Rossum3225c1f2001-03-22 15:41:06 +000051
Guido van Rossum7df772b2002-04-11 20:54:35 +000052(2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
53 because its license has a choice of law clause. According to
54 CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
55 is "not incompatible" with the GPL.
56
Guido van Rossum3225c1f2001-03-22 15:41:06 +000057Thanks to the many outside volunteers who have worked under Guido's
58direction to make these releases possible.
Guido van Rossumea70b492000-09-01 19:51:14 +000059
Guido van Rossumea70b492000-09-01 19:51:14 +000060
Guido van Rossumaa815df2001-04-10 03:37:31 +000061B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
62===============================================================
Guido van Rossum3225c1f2001-03-22 15:41:06 +000063
Guido van Rossum7b4dd762001-07-17 20:14:06 +000064PSF LICENSE AGREEMENT FOR PYTHON 2.2
65------------------------------------
Guido van Rossum9ea60c52001-04-13 15:04:00 +000066
671. This LICENSE AGREEMENT is between the Python Software Foundation
68("PSF"), and the Individual or Organization ("Licensee") accessing and
Guido van Rossum7b4dd762001-07-17 20:14:06 +000069otherwise using Python 2.2 software in source or binary form and its
Guido van Rossum9ea60c52001-04-13 15:04:00 +000070associated documentation.
71
722. Subject to the terms and conditions of this License Agreement, PSF
73hereby grants Licensee a nonexclusive, royalty-free, world-wide
74license to reproduce, analyze, test, perform and/or display publicly,
Guido van Rossum7b4dd762001-07-17 20:14:06 +000075prepare derivative works, distribute, and otherwise use Python 2.2
Guido van Rossum9ea60c52001-04-13 15:04:00 +000076alone or in any derivative version, provided, however, that PSF's
77License Agreement and PSF's notice of copyright, i.e., "Copyright (c)
Michael W. Hudson494cdb62002-02-27 13:29:46 +0000782001, 2002 Python Software Foundation; All Rights Reserved" are
79retained in Python 2.2 alone or in any derivative version prepared by
80Licensee.
Guido van Rossum9ea60c52001-04-13 15:04:00 +000081
823. In the event Licensee prepares a derivative work that is based on
Guido van Rossum7b4dd762001-07-17 20:14:06 +000083or incorporates Python 2.2 or any part thereof, and wants to make
Guido van Rossum9ea60c52001-04-13 15:04:00 +000084the derivative work available to others as provided herein, then
85Licensee hereby agrees to include in any such work a brief summary of
Guido van Rossum7b4dd762001-07-17 20:14:06 +000086the changes made to Python 2.2.
Guido van Rossum9ea60c52001-04-13 15:04:00 +000087
Guido van Rossum7b4dd762001-07-17 20:14:06 +0000884. PSF is making Python 2.2 available to Licensee on an "AS IS"
Guido van Rossum9ea60c52001-04-13 15:04:00 +000089basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
90IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
91DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
Guido van Rossum7b4dd762001-07-17 20:14:06 +000092FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 2.2 WILL NOT
Guido van Rossum9ea60c52001-04-13 15:04:00 +000093INFRINGE ANY THIRD PARTY RIGHTS.
94
955. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
Guido van Rossum7b4dd762001-07-17 20:14:06 +0000962.2 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
97A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 2.2,
Guido van Rossum9ea60c52001-04-13 15:04:00 +000098OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
99
1006. This License Agreement will automatically terminate upon a material
101breach of its terms and conditions.
102
Guido van Rossum648b4de2001-05-04 18:49:06 +00001037. Nothing in this License Agreement shall be deemed to create any
104relationship of agency, partnership, or joint venture between PSF and
105Licensee. This License Agreement does not grant permission to use PSF
106trademarks or trade name in a trademark sense to endorse or promote
107products or services of Licensee, or any third party.
Guido van Rossum9ea60c52001-04-13 15:04:00 +0000108
Guido van Rossum7b4dd762001-07-17 20:14:06 +00001098. By copying, installing or otherwise using Python 2.2, Licensee
Guido van Rossum859d9b52001-04-13 19:41:28 +0000110agrees to be bound by the terms and conditions of this License
111Agreement.
112
Guido van Rossum575d7f32001-04-13 15:04:31 +0000113
Guido van Rossum7b4dd762001-07-17 20:14:06 +0000114BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
115-------------------------------------------
Guido van Rossum028d0692000-09-03 03:13:44 +0000116
Guido van Rossum2e0d3312000-09-04 00:58:48 +0000117BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
Guido van Rossumea70b492000-09-01 19:51:14 +0000118
Guido van Rossum028d0692000-09-03 03:13:44 +00001191. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
120office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
Guido van Rossumea70b492000-09-01 19:51:14 +0000121Individual or Organization ("Licensee") accessing and otherwise using
122this software in source or binary form and its associated
123documentation ("the Software").
124
Guido van Rossum028d0692000-09-03 03:13:44 +00001252. Subject to the terms and conditions of this BeOpen Python License
126Agreement, BeOpen hereby grants Licensee a non-exclusive,
127royalty-free, world-wide license to reproduce, analyze, test, perform
128and/or display publicly, prepare derivative works, distribute, and
129otherwise use the Software alone or in any derivative version,
130provided, however, that the BeOpen Python License is retained in the
131Software, alone or in any derivative version prepared by Licensee.
Guido van Rossumea70b492000-09-01 19:51:14 +0000132
Guido van Rossum82271162000-09-05 03:05:07 +00001333. BeOpen is making the Software available to Licensee on an "AS IS"
Guido van Rossumea70b492000-09-01 19:51:14 +0000134basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
135IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
136DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
137FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
138INFRINGE ANY THIRD PARTY RIGHTS.
139
Guido van Rossum82271162000-09-05 03:05:07 +00001404. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
Guido van Rossumea70b492000-09-01 19:51:14 +0000141SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
142AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
143DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
144
Guido van Rossum82271162000-09-05 03:05:07 +00001455. This License Agreement will automatically terminate upon a material
Guido van Rossumea70b492000-09-01 19:51:14 +0000146breach of its terms and conditions.
147
Guido van Rossum82271162000-09-05 03:05:07 +00001486. This License Agreement shall be governed by and interpreted in all
Guido van Rossumea70b492000-09-01 19:51:14 +0000149respects by the law of the State of California, excluding conflict of
150law provisions. Nothing in this License Agreement shall be deemed to
151create any relationship of agency, partnership, or joint venture
152between BeOpen and Licensee. This License Agreement does not grant
Guido van Rossumac1c8182000-09-03 13:21:38 +0000153permission to use BeOpen trademarks or trade names in a trademark
154sense to endorse or promote products or services of Licensee, or any
155third party. As an exception, the "BeOpen Python" logos available at
Guido van Rossum028d0692000-09-03 03:13:44 +0000156http://www.pythonlabs.com/logos.html may be used according to the
157permissions granted on that web page.
Guido van Rossumea70b492000-09-01 19:51:14 +0000158
Guido van Rossum82271162000-09-05 03:05:07 +00001597. By copying, installing or otherwise using the software, Licensee
Guido van Rossumea70b492000-09-01 19:51:14 +0000160agrees to be bound by the terms and conditions of this License
161Agreement.
162
163
Guido van Rossum7b4dd762001-07-17 20:14:06 +0000164CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
165---------------------------------------
Guido van Rossumea761c02000-10-10 14:49:44 +0000166
1671. This LICENSE AGREEMENT is between the Corporation for National
168Research Initiatives, having an office at 1895 Preston White Drive,
169Reston, VA 20191 ("CNRI"), and the Individual or Organization
Guido van Rossum3225c1f2001-03-22 15:41:06 +0000170("Licensee") accessing and otherwise using Python 1.6.1 software in
171source or binary form and its associated documentation.
Guido van Rossumea761c02000-10-10 14:49:44 +0000172
1732. Subject to the terms and conditions of this License Agreement, CNRI
174hereby grants Licensee a nonexclusive, royalty-free, world-wide
175license to reproduce, analyze, test, perform and/or display publicly,
Guido van Rossum3225c1f2001-03-22 15:41:06 +0000176prepare derivative works, distribute, and otherwise use Python 1.6.1
Guido van Rossumea761c02000-10-10 14:49:44 +0000177alone or in any derivative version, provided, however, that CNRI's
178License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
Guido van Rossum3225c1f2001-03-22 15:41:06 +00001791995-2001 Corporation for National Research Initiatives; All Rights
180Reserved" are retained in Python 1.6.1 alone or in any derivative
181version prepared by Licensee. Alternately, in lieu of CNRI's License
182Agreement, Licensee may substitute the following text (omitting the
183quotes): "Python 1.6.1 is made available subject to the terms and
184conditions in CNRI's License Agreement. This Agreement together with
185Python 1.6.1 may be located on the Internet using the following
186unique, persistent identifier (known as a handle): 1895.22/1013. This
187Agreement may also be obtained from a proxy server on the Internet
188using the following URL: http://hdl.handle.net/1895.22/1013".
Guido van Rossumea761c02000-10-10 14:49:44 +0000189
1903. In the event Licensee prepares a derivative work that is based on
Guido van Rossum3225c1f2001-03-22 15:41:06 +0000191or incorporates Python 1.6.1 or any part thereof, and wants to make
192the derivative work available to others as provided herein, then
193Licensee hereby agrees to include in any such work a brief summary of
194the changes made to Python 1.6.1.
Guido van Rossumea761c02000-10-10 14:49:44 +0000195
Guido van Rossum3225c1f2001-03-22 15:41:06 +00001964. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
197basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
198IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
Guido van Rossumea761c02000-10-10 14:49:44 +0000199DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
Guido van Rossum3225c1f2001-03-22 15:41:06 +0000200FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
Guido van Rossumea761c02000-10-10 14:49:44 +0000201INFRINGE ANY THIRD PARTY RIGHTS.
202
2035. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
Guido van Rossum3225c1f2001-03-22 15:41:06 +00002041.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
205A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
206OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
Guido van Rossumea761c02000-10-10 14:49:44 +0000207
2086. This License Agreement will automatically terminate upon a material
209breach of its terms and conditions.
210
Guido van Rossum3225c1f2001-03-22 15:41:06 +00002117. This License Agreement shall be governed by the federal
212intellectual property law of the United States, including without
213limitation the federal copyright law, and, to the extent such
214U.S. federal law does not apply, by the law of the Commonwealth of
215Virginia, excluding Virginia's conflict of law provisions.
216Notwithstanding the foregoing, with regard to derivative works based
217on Python 1.6.1 that incorporate non-separable material that was
218previously distributed under the GNU General Public License (GPL), the
219law of the Commonwealth of Virginia shall govern this License
220Agreement only as to issues arising under or with respect to
221Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
222License Agreement shall be deemed to create any relationship of
223agency, partnership, or joint venture between CNRI and Licensee. This
224License Agreement does not grant permission to use CNRI trademarks or
225trade name in a trademark sense to endorse or promote products or
226services of Licensee, or any third party.
Guido van Rossumea761c02000-10-10 14:49:44 +0000227
2288. By clicking on the "ACCEPT" button where indicated, or by copying,
Guido van Rossum3225c1f2001-03-22 15:41:06 +0000229installing or otherwise using Python 1.6.1, Licensee agrees to be
230bound by the terms and conditions of this License Agreement.
Guido van Rossumea761c02000-10-10 14:49:44 +0000231
Guido van Rossum3225c1f2001-03-22 15:41:06 +0000232 ACCEPT
Guido van Rossumea70b492000-09-01 19:51:14 +0000233
234
Guido van Rossum7b4dd762001-07-17 20:14:06 +0000235CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
236--------------------------------------------------
Guido van Rossumea70b492000-09-01 19:51:14 +0000237
238Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
239The Netherlands. All rights reserved.
240
241Permission to use, copy, modify, and distribute this software and its
242documentation for any purpose and without fee is hereby granted,
243provided that the above copyright notice appear in all copies and that
244both that copyright notice and this permission notice appear in
245supporting documentation, and that the name of Stichting Mathematisch
246Centrum or CWI not be used in advertising or publicity pertaining to
247distribution of the software without specific, written prior
248permission.
249
250STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
251THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
252FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
253FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
254WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
255ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
256OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.