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Python License

 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 from

Year

Owner

GPL-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 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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