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1 A. HISTORY OF THE SOFTWARE
2 ==========================
4 Python was created in the early 1990s by Guido van Rossum at Stichting
5 Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
6 as a successor of a language called ABC. Guido remains Python's
7 principal author, although it includes many contributions from others.
9 In 1995, Guido continued his work on Python at the Corporation for
10 National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
11 in Reston, Virginia where he released several versions of the
12 software.
14 In May 2000, Guido and the Python core development team moved to
15 BeOpen.com to form the BeOpen PythonLabs team. In October of the same
16 year, the PythonLabs team moved to Digital Creations (now Zope
17 Corporation, see http://www.zope.com). In 2001, the Python Software
18 Foundation (PSF, see http://www.python.org/psf/) was formed, a
19 non-profit organization created specifically to own Python-related
20 Intellectual Property. Zope Corporation is a sponsoring member of
21 the PSF.
23 All Python releases are Open Source (see http://www.opensource.org for
24 the Open Source Definition). Historically, most, but not all, Python
25 releases have also been GPL-compatible; the table below summarizes
26 the various releases.
28 Release Derived Year Owner GPL-
29 from compatible? (1)
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
35 1.6.1 1.6 2001 CNRI yes (2)
36 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
40 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
43 2.2.2 2.2.1 2002 PSF yes
44 2.2.3 2.2.2 2003 PSF yes
45 2.3 2.2.2 2002-2003 PSF yes
46 2.3.1 2.3 2002-2003 PSF yes
47 2.3.2 2.3.1 2002-2003 PSF yes
48 2.3.3 2.3.2 2002-2003 PSF yes
49 2.3.4 2.3.3 2004 PSF yes
50 2.3.5 2.3.4 2005 PSF yes
51 2.4 2.3 2004 PSF yes
52 2.4.1 2.4 2005 PSF yes
53 2.4.2 2.4.1 2005 PSF yes
54 2.4.3 2.4.2 2006 PSF yes
55 2.5 2.4 2006 PSF yes
56 2.7 2.6 2010 PSF yes
58 Footnotes:
60 (1) GPL-compatible doesn't mean that we're distributing Python under
61 the GPL. All Python licenses, unlike the GPL, let you distribute
62 a modified version without making your changes open source. The
63 GPL-compatible licenses make it possible to combine Python with
64 other software that is released under the GPL; the others don't.
66 (2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
67 because its license has a choice of law clause. According to
68 CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
69 is "not incompatible" with the GPL.
71 Thanks to the many outside volunteers who have worked under Guido's
72 direction to make these releases possible.
75 B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
76 ===============================================================
78 PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
79 --------------------------------------------
81 1. This LICENSE AGREEMENT is between the Python Software Foundation
82 ("PSF"), and the Individual or Organization ("Licensee") accessing and
83 otherwise using this software ("Python") in source or binary form and
84 its associated documentation.
86 2. Subject to the terms and conditions of this License Agreement, PSF
87 hereby grants Licensee a nonexclusive, royalty-free, world-wide
88 license to reproduce, analyze, test, perform and/or display publicly,
89 prepare derivative works, distribute, and otherwise use Python
90 alone or in any derivative version, provided, however, that PSF's
91 License Agreement and PSF's notice of copyright, i.e., "Copyright (c)
92 2001, 2002, 2003, 2004, 2005, 2006 Python Software Foundation; All Rights
93 Reserved" are retained in Python alone or in any derivative version
94 prepared by Licensee.
96 3. In the event Licensee prepares a derivative work that is based on
97 or incorporates Python or any part thereof, and wants to make
98 the derivative work available to others as provided herein, then
99 Licensee hereby agrees to include in any such work a brief summary of
100 the changes made to Python.
102 4. PSF is making Python available to Licensee on an "AS IS"
103 basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
104 IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
105 DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
106 FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
107 INFRINGE ANY THIRD PARTY RIGHTS.
109 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
110 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
111 A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
112 OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
114 6. This License Agreement will automatically terminate upon a material
115 breach of its terms and conditions.
117 7. Nothing in this License Agreement shall be deemed to create any
118 relationship of agency, partnership, or joint venture between PSF and
119 Licensee. This License Agreement does not grant permission to use PSF
120 trademarks or trade name in a trademark sense to endorse or promote
121 products or services of Licensee, or any third party.
123 8. By copying, installing or otherwise using Python, Licensee
124 agrees to be bound by the terms and conditions of this License
125 Agreement.
128 BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
129 -------------------------------------------
131 BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
133 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
134 office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
135 Individual or Organization ("Licensee") accessing and otherwise using
136 this software in source or binary form and its associated
137 documentation ("the Software").
139 2. Subject to the terms and conditions of this BeOpen Python License
140 Agreement, BeOpen hereby grants Licensee a non-exclusive,
141 royalty-free, world-wide license to reproduce, analyze, test, perform
142 and/or display publicly, prepare derivative works, distribute, and
143 otherwise use the Software alone or in any derivative version,
144 provided, however, that the BeOpen Python License is retained in the
145 Software, alone or in any derivative version prepared by Licensee.
147 3. BeOpen is making the Software available to Licensee on an "AS IS"
148 basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
149 IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
150 DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
151 FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
152 INFRINGE ANY THIRD PARTY RIGHTS.
154 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
155 SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
156 AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
157 DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
159 5. This License Agreement will automatically terminate upon a material
160 breach of its terms and conditions.
162 6. This License Agreement shall be governed by and interpreted in all
163 respects by the law of the State of California, excluding conflict of
164 law provisions. Nothing in this License Agreement shall be deemed to
165 create any relationship of agency, partnership, or joint venture
166 between BeOpen and Licensee. This License Agreement does not grant
167 permission to use BeOpen trademarks or trade names in a trademark
168 sense to endorse or promote products or services of Licensee, or any
169 third party. As an exception, the "BeOpen Python" logos available at
170 http://www.pythonlabs.com/logos.html may be used according to the
171 permissions granted on that web page.
173 7. By copying, installing or otherwise using the software, Licensee
174 agrees to be bound by the terms and conditions of this License
175 Agreement.
178 CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
179 ---------------------------------------
181 1. This LICENSE AGREEMENT is between the Corporation for National
182 Research Initiatives, having an office at 1895 Preston White Drive,
183 Reston, VA 20191 ("CNRI"), and the Individual or Organization
184 ("Licensee") accessing and otherwise using Python 1.6.1 software in
185 source or binary form and its associated documentation.
187 2. Subject to the terms and conditions of this License Agreement, CNRI
188 hereby grants Licensee a nonexclusive, royalty-free, world-wide
189 license to reproduce, analyze, test, perform and/or display publicly,
190 prepare derivative works, distribute, and otherwise use Python 1.6.1
191 alone or in any derivative version, provided, however, that CNRI's
192 License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
193 1995-2001 Corporation for National Research Initiatives; All Rights
194 Reserved" are retained in Python 1.6.1 alone or in any derivative
195 version prepared by Licensee. Alternately, in lieu of CNRI's License
196 Agreement, Licensee may substitute the following text (omitting the
197 quotes): "Python 1.6.1 is made available subject to the terms and
198 conditions in CNRI's License Agreement. This Agreement together with
199 Python 1.6.1 may be located on the Internet using the following
200 unique, persistent identifier (known as a handle): 1895.22/1013. This
201 Agreement may also be obtained from a proxy server on the Internet
202 using the following URL: http://hdl.handle.net/1895.22/1013".
204 3. In the event Licensee prepares a derivative work that is based on
205 or incorporates Python 1.6.1 or any part thereof, and wants to make
206 the derivative work available to others as provided herein, then
207 Licensee hereby agrees to include in any such work a brief summary of
208 the changes made to Python 1.6.1.
210 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
211 basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
212 IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
213 DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
214 FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
215 INFRINGE ANY THIRD PARTY RIGHTS.
217 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
218 1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
219 A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
220 OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
222 6. This License Agreement will automatically terminate upon a material
223 breach of its terms and conditions.
225 7. This License Agreement shall be governed by the federal
226 intellectual property law of the United States, including without
227 limitation the federal copyright law, and, to the extent such
228 U.S. federal law does not apply, by the law of the Commonwealth of
229 Virginia, excluding Virginia's conflict of law provisions.
230 Notwithstanding the foregoing, with regard to derivative works based
231 on Python 1.6.1 that incorporate non-separable material that was
232 previously distributed under the GNU General Public License (GPL), the
233 law of the Commonwealth of Virginia shall govern this License
234 Agreement only as to issues arising under or with respect to
235 Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
236 License Agreement shall be deemed to create any relationship of
237 agency, partnership, or joint venture between CNRI and Licensee. This
238 License Agreement does not grant permission to use CNRI trademarks or
239 trade name in a trademark sense to endorse or promote products or
240 services of Licensee, or any third party.
242 8. By clicking on the "ACCEPT" button where indicated, or by copying,
243 installing or otherwise using Python 1.6.1, Licensee agrees to be
244 bound by the terms and conditions of this License Agreement.
246 ACCEPT
249 CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
250 --------------------------------------------------
252 Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
253 The Netherlands. All rights reserved.
255 Permission to use, copy, modify, and distribute this software and its
256 documentation for any purpose and without fee is hereby granted,
257 provided that the above copyright notice appear in all copies and that
258 both that copyright notice and this permission notice appear in
259 supporting documentation, and that the name of Stichting Mathematisch
260 Centrum or CWI not be used in advertising or publicity pertaining to
261 distribution of the software without specific, written prior
262 permission.
264 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
265 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
266 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
267 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
268 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
269 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
270 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.