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1.4 +A. HISTORY OF THE SOFTWARE
1.5 +==========================
1.6 +
1.7 +Python was created in the early 1990s by Guido van Rossum at Stichting
1.8 +Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
1.9 +as a successor of a language called ABC. Guido remains Python's
1.10 +principal author, although it includes many contributions from others.
1.11 +
1.12 +In 1995, Guido continued his work on Python at the Corporation for
1.13 +National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
1.14 +in Reston, Virginia where he released several versions of the
1.15 +software.
1.16 +
1.17 +In May 2000, Guido and the Python core development team moved to
1.18 +BeOpen.com to form the BeOpen PythonLabs team. In October of the same
1.19 +year, the PythonLabs team moved to Digital Creations (now Zope
1.20 +Corporation, see http://www.zope.com). In 2001, the Python Software
1.21 +Foundation (PSF, see http://www.python.org/psf/) was formed, a
1.22 +non-profit organization created specifically to own Python-related
1.23 +Intellectual Property. Zope Corporation is a sponsoring member of
1.24 +the PSF.
1.25 +
1.26 +All Python releases are Open Source (see http://www.opensource.org for
1.27 +the Open Source Definition). Historically, most, but not all, Python
1.28 +releases have also been GPL-compatible; the table below summarizes
1.29 +the various releases.
1.30 +
1.31 + Release Derived Year Owner GPL-
1.32 + from compatible? (1)
1.33 +
1.34 + 0.9.0 thru 1.2 1991-1995 CWI yes
1.35 + 1.3 thru 1.5.2 1.2 1995-1999 CNRI yes
1.36 + 1.6 1.5.2 2000 CNRI no
1.37 + 2.0 1.6 2000 BeOpen.com no
1.38 + 1.6.1 1.6 2001 CNRI yes (2)
1.39 + 2.1 2.0+1.6.1 2001 PSF no
1.40 + 2.0.1 2.0+1.6.1 2001 PSF yes
1.41 + 2.1.1 2.1+2.0.1 2001 PSF yes
1.42 + 2.1.2 2.1.1 2002 PSF yes
1.43 + 2.1.3 2.1.2 2002 PSF yes
1.44 + 2.2 and above 2.1.1 2001-now PSF yes
1.45 +
1.46 +Footnotes:
1.47 +
1.48 +(1) GPL-compatible doesn't mean that we're distributing Python under
1.49 + the GPL. All Python licenses, unlike the GPL, let you distribute
1.50 + a modified version without making your changes open source. The
1.51 + GPL-compatible licenses make it possible to combine Python with
1.52 + other software that is released under the GPL; the others don't.
1.53 +
1.54 +(2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
1.55 + because its license has a choice of law clause. According to
1.56 + CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
1.57 + is "not incompatible" with the GPL.
1.58 +
1.59 +Thanks to the many outside volunteers who have worked under Guido's
1.60 +direction to make these releases possible.
1.61 +
1.62 +
1.63 +B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
1.64 +===============================================================
1.65 +
1.66 +PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
1.67 +--------------------------------------------
1.68 +
1.69 +1. This LICENSE AGREEMENT is between the Python Software Foundation
1.70 +("PSF"), and the Individual or Organization ("Licensee") accessing and
1.71 +otherwise using this software ("Python") in source or binary form and
1.72 +its associated documentation.
1.73 +
1.74 +2. Subject to the terms and conditions of this License Agreement, PSF hereby
1.75 +grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
1.76 +analyze, test, perform and/or display publicly, prepare derivative works,
1.77 +distribute, and otherwise use Python alone or in any derivative version,
1.78 +provided, however, that PSF's License Agreement and PSF's notice of copyright,
1.79 +i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
1.80 +2011, 2012, 2013, 2014 Python Software Foundation; All Rights Reserved" are retained
1.81 +in Python alone or in any derivative version prepared by Licensee.
1.82 +
1.83 +3. In the event Licensee prepares a derivative work that is based on
1.84 +or incorporates Python or any part thereof, and wants to make
1.85 +the derivative work available to others as provided herein, then
1.86 +Licensee hereby agrees to include in any such work a brief summary of
1.87 +the changes made to Python.
1.88 +
1.89 +4. PSF is making Python available to Licensee on an "AS IS"
1.90 +basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
1.91 +IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
1.92 +DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
1.93 +FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
1.94 +INFRINGE ANY THIRD PARTY RIGHTS.
1.95 +
1.96 +5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
1.97 +FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
1.98 +A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
1.99 +OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
1.100 +
1.101 +6. This License Agreement will automatically terminate upon a material
1.102 +breach of its terms and conditions.
1.103 +
1.104 +7. Nothing in this License Agreement shall be deemed to create any
1.105 +relationship of agency, partnership, or joint venture between PSF and
1.106 +Licensee. This License Agreement does not grant permission to use PSF
1.107 +trademarks or trade name in a trademark sense to endorse or promote
1.108 +products or services of Licensee, or any third party.
1.109 +
1.110 +8. By copying, installing or otherwise using Python, Licensee
1.111 +agrees to be bound by the terms and conditions of this License
1.112 +Agreement.
1.113 +
1.114 +
1.115 +BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
1.116 +-------------------------------------------
1.117 +
1.118 +BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
1.119 +
1.120 +1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
1.121 +office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
1.122 +Individual or Organization ("Licensee") accessing and otherwise using
1.123 +this software in source or binary form and its associated
1.124 +documentation ("the Software").
1.125 +
1.126 +2. Subject to the terms and conditions of this BeOpen Python License
1.127 +Agreement, BeOpen hereby grants Licensee a non-exclusive,
1.128 +royalty-free, world-wide license to reproduce, analyze, test, perform
1.129 +and/or display publicly, prepare derivative works, distribute, and
1.130 +otherwise use the Software alone or in any derivative version,
1.131 +provided, however, that the BeOpen Python License is retained in the
1.132 +Software, alone or in any derivative version prepared by Licensee.
1.133 +
1.134 +3. BeOpen is making the Software available to Licensee on an "AS IS"
1.135 +basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
1.136 +IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
1.137 +DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
1.138 +FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
1.139 +INFRINGE ANY THIRD PARTY RIGHTS.
1.140 +
1.141 +4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
1.142 +SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
1.143 +AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
1.144 +DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
1.145 +
1.146 +5. This License Agreement will automatically terminate upon a material
1.147 +breach of its terms and conditions.
1.148 +
1.149 +6. This License Agreement shall be governed by and interpreted in all
1.150 +respects by the law of the State of California, excluding conflict of
1.151 +law provisions. Nothing in this License Agreement shall be deemed to
1.152 +create any relationship of agency, partnership, or joint venture
1.153 +between BeOpen and Licensee. This License Agreement does not grant
1.154 +permission to use BeOpen trademarks or trade names in a trademark
1.155 +sense to endorse or promote products or services of Licensee, or any
1.156 +third party. As an exception, the "BeOpen Python" logos available at
1.157 +http://www.pythonlabs.com/logos.html may be used according to the
1.158 +permissions granted on that web page.
1.159 +
1.160 +7. By copying, installing or otherwise using the software, Licensee
1.161 +agrees to be bound by the terms and conditions of this License
1.162 +Agreement.
1.163 +
1.164 +
1.165 +CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
1.166 +---------------------------------------
1.167 +
1.168 +1. This LICENSE AGREEMENT is between the Corporation for National
1.169 +Research Initiatives, having an office at 1895 Preston White Drive,
1.170 +Reston, VA 20191 ("CNRI"), and the Individual or Organization
1.171 +("Licensee") accessing and otherwise using Python 1.6.1 software in
1.172 +source or binary form and its associated documentation.
1.173 +
1.174 +2. Subject to the terms and conditions of this License Agreement, CNRI
1.175 +hereby grants Licensee a nonexclusive, royalty-free, world-wide
1.176 +license to reproduce, analyze, test, perform and/or display publicly,
1.177 +prepare derivative works, distribute, and otherwise use Python 1.6.1
1.178 +alone or in any derivative version, provided, however, that CNRI's
1.179 +License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
1.180 +1995-2001 Corporation for National Research Initiatives; All Rights
1.181 +Reserved" are retained in Python 1.6.1 alone or in any derivative
1.182 +version prepared by Licensee. Alternately, in lieu of CNRI's License
1.183 +Agreement, Licensee may substitute the following text (omitting the
1.184 +quotes): "Python 1.6.1 is made available subject to the terms and
1.185 +conditions in CNRI's License Agreement. This Agreement together with
1.186 +Python 1.6.1 may be located on the Internet using the following
1.187 +unique, persistent identifier (known as a handle): 1895.22/1013. This
1.188 +Agreement may also be obtained from a proxy server on the Internet
1.189 +using the following URL: http://hdl.handle.net/1895.22/1013".
1.190 +
1.191 +3. In the event Licensee prepares a derivative work that is based on
1.192 +or incorporates Python 1.6.1 or any part thereof, and wants to make
1.193 +the derivative work available to others as provided herein, then
1.194 +Licensee hereby agrees to include in any such work a brief summary of
1.195 +the changes made to Python 1.6.1.
1.196 +
1.197 +4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
1.198 +basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
1.199 +IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
1.200 +DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
1.201 +FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
1.202 +INFRINGE ANY THIRD PARTY RIGHTS.
1.203 +
1.204 +5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
1.205 +1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
1.206 +A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
1.207 +OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
1.208 +
1.209 +6. This License Agreement will automatically terminate upon a material
1.210 +breach of its terms and conditions.
1.211 +
1.212 +7. This License Agreement shall be governed by the federal
1.213 +intellectual property law of the United States, including without
1.214 +limitation the federal copyright law, and, to the extent such
1.215 +U.S. federal law does not apply, by the law of the Commonwealth of
1.216 +Virginia, excluding Virginia's conflict of law provisions.
1.217 +Notwithstanding the foregoing, with regard to derivative works based
1.218 +on Python 1.6.1 that incorporate non-separable material that was
1.219 +previously distributed under the GNU General Public License (GPL), the
1.220 +law of the Commonwealth of Virginia shall govern this License
1.221 +Agreement only as to issues arising under or with respect to
1.222 +Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
1.223 +License Agreement shall be deemed to create any relationship of
1.224 +agency, partnership, or joint venture between CNRI and Licensee. This
1.225 +License Agreement does not grant permission to use CNRI trademarks or
1.226 +trade name in a trademark sense to endorse or promote products or
1.227 +services of Licensee, or any third party.
1.228 +
1.229 +8. By clicking on the "ACCEPT" button where indicated, or by copying,
1.230 +installing or otherwise using Python 1.6.1, Licensee agrees to be
1.231 +bound by the terms and conditions of this License Agreement.
1.232 +
1.233 + ACCEPT
1.234 +
1.235 +
1.236 +CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
1.237 +--------------------------------------------------
1.238 +
1.239 +Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
1.240 +The Netherlands. All rights reserved.
1.241 +
1.242 +Permission to use, copy, modify, and distribute this software and its
1.243 +documentation for any purpose and without fee is hereby granted,
1.244 +provided that the above copyright notice appear in all copies and that
1.245 +both that copyright notice and this permission notice appear in
1.246 +supporting documentation, and that the name of Stichting Mathematisch
1.247 +Centrum or CWI not be used in advertising or publicity pertaining to
1.248 +distribution of the software without specific, written prior
1.249 +permission.
1.250 +
1.251 +STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
1.252 +THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
1.253 +FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
1.254 +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1.255 +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
1.256 +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
1.257 +OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.