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						- A. HISTORY OF THE SOFTWARE
 - ==========================
 - 
 - Python was created in the early 1990s by Guido van Rossum at Stichting
 - Mathematisch Centrum (CWI, see http://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 http://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, 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 was a sponsoring member of the PSF.
 - 
 - All Python releases are Open Source (see http://www.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     Year        Owner       GPL-
 -                     from                                compatible? (1)
 - 
 -     0.9.0 thru 1.2              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
 - 
 - Footnotes:
 - 
 - (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.
 - 
 - 
 - B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
 - ===============================================================
 - 
 - PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
 - --------------------------------------------
 - 
 - 1. This LICENSE AGREEMENT is between the Python Software Foundation
 - ("PSF"), and 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 alone or in any derivative version,
 - provided, however, that PSF's License Agreement and PSF's notice of copyright,
 - i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 - 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Python Software Foundation;
 - All Rights 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 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.
 - 
 - 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 WILL NOT
 - INFRINGE ANY THIRD PARTY RIGHTS.
 - 
 - 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,
 - OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
 - 
 - 6. This License Agreement will automatically terminate upon a material
 - breach of its terms and conditions.
 - 
 - 7. Nothing in this License Agreement shall be deemed to create any
 - relationship of agency, partnership, or joint venture between PSF and
 - Licensee.  This License Agreement does not grant permission to use PSF
 - trademarks or trade name in a trademark sense to endorse or promote
 - products or services of Licensee, or any third party.
 - 
 - 8. By copying, installing or otherwise using Python, Licensee
 - agrees to be bound by the terms and conditions of this License
 - Agreement.
 - 
 - 
 - BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
 - -------------------------------------------
 - 
 - BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
 - 
 - 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
 - office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
 - Individual or Organization ("Licensee") accessing and otherwise using
 - this software in source or binary form and its associated
 - documentation ("the Software").
 - 
 - 2. Subject to the terms and conditions of this BeOpen Python License
 - Agreement, BeOpen hereby grants Licensee a non-exclusive,
 - royalty-free, world-wide license to reproduce, analyze, test, perform
 - and/or display publicly, prepare derivative works, distribute, and
 - otherwise use the Software alone or in any derivative version,
 - provided, however, that the BeOpen Python License is retained in the
 - Software, alone or in any derivative version prepared by Licensee.
 - 
 - 3. BeOpen is making the Software available to Licensee on an "AS IS"
 - basis.  BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
 - IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
 - DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
 - FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
 - INFRINGE ANY THIRD PARTY RIGHTS.
 - 
 - 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
 - SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
 - AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
 - DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
 - 
 - 5. This License Agreement will automatically terminate upon a material
 - breach of its terms and conditions.
 - 
 - 6. This License Agreement shall be governed by and interpreted in all
 - respects by the law of the State of California, excluding conflict of
 - law provisions.  Nothing in this License Agreement shall be deemed to
 - create any relationship of agency, partnership, or joint venture
 - between BeOpen and Licensee.  This License Agreement does not grant
 - permission to use BeOpen trademarks or trade names in a trademark
 - sense to endorse or promote products or services of Licensee, or any
 - third party.  As an exception, the "BeOpen Python" logos available at
 - http://www.pythonlabs.com/logos.html may be used according to the
 - permissions granted on that web page.
 - 
 - 7. By copying, installing or otherwise using the software, Licensee
 - agrees to be bound by the terms and conditions of this License
 - Agreement.
 - 
 - 
 - CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
 - ---------------------------------------
 - 
 - 1. This LICENSE AGREEMENT is between the Corporation for National
 - Research Initiatives, having an office at 1895 Preston White Drive,
 - Reston, VA 20191 ("CNRI"), and the Individual or Organization
 - ("Licensee") accessing and otherwise using Python 1.6.1 software in
 - source or binary form and its associated documentation.
 - 
 - 2. Subject to the terms and conditions of this License Agreement, CNRI
 - 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 1.6.1
 - alone or in any derivative version, provided, however, that CNRI's
 - License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
 - 1995-2001 Corporation for National Research Initiatives; All Rights
 - Reserved" are retained in Python 1.6.1 alone or in any derivative
 - version prepared by Licensee.  Alternately, in lieu of CNRI's License
 - Agreement, Licensee may substitute the following text (omitting the
 - quotes): "Python 1.6.1 is made available subject to the terms and
 - conditions in CNRI's License 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".
 - 
 - 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 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 1.6.1.
 - 
 - 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
 - basis.  CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
 - IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
 - DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
 - FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
 - INFRINGE ANY THIRD PARTY RIGHTS.
 - 
 - 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
 - 1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
 - A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
 - OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
 - 
 - 6. This License Agreement will automatically terminate upon a material
 - breach of its terms and conditions.
 - 
 - 7. This License Agreement shall be governed by the federal
 - intellectual property law of the United States, including without
 - limitation the federal copyright law, and, to the extent such
 - U.S. federal law does not apply, by the law of the Commonwealth of
 - Virginia, excluding Virginia's conflict of law provisions.
 - Notwithstanding the foregoing, with regard to derivative works based
 - on Python 1.6.1 that incorporate non-separable material that was
 - previously distributed under the GNU General Public License (GPL), the
 - law of the Commonwealth of Virginia shall govern this License
 - Agreement only as to issues arising under or with respect to
 - Paragraphs 4, 5, and 7 of this License Agreement.  Nothing in this
 - License Agreement shall be deemed to create any relationship of
 - agency, partnership, or joint venture between CNRI and Licensee.  This
 - License Agreement does not grant permission to use CNRI trademarks or
 - trade name in a trademark sense to endorse or promote products or
 - services of Licensee, or any third party.
 - 
 - 8. By clicking on the "ACCEPT" button where indicated, or by copying,
 - installing or otherwise using Python 1.6.1, Licensee agrees to be
 - bound by the terms and conditions of this License Agreement.
 - 
 -         ACCEPT
 - 
 - 
 - CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
 - --------------------------------------------------
 - 
 - Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
 - The Netherlands.  All rights reserved.
 - 
 - Permission to use, copy, modify, and distribute this software and its
 - documentation for any purpose and without fee is hereby granted,
 - provided that the above copyright notice appear in all copies and that
 - both that copyright notice and this permission notice appear in
 - supporting documentation, and that the name of Stichting Mathematisch
 - Centrum or CWI not be used in advertising or publicity pertaining to
 - distribution of the software without specific, written prior
 - permission.
 - 
 - STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
 - THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
 - FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
 - FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 - OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 
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