| 1 | A. HISTORY OF THE SOFTWARE
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| 2 | ==========================
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| 3 |
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| 4 | Python was created in the early 1990s by Guido van Rossum at Stichting
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| 5 | Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
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| 6 | as a successor of a language called ABC. Guido remains Python's
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| 7 | principal author, although it includes many contributions from others.
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| 8 |
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| 9 | In 1995, Guido continued his work on Python at the Corporation for
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| 10 | National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
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| 11 | in Reston, Virginia where he released several versions of the
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| 12 | software.
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| 13 |
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| 14 | In May 2000, Guido and the Python core development team moved to
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| 15 | BeOpen.com to form the BeOpen PythonLabs team. In October of the same
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| 16 | year, the PythonLabs team moved to Digital Creations, which became
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| 17 | Zope Corporation. In 2001, the Python Software Foundation (PSF, see
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| 18 | https://www.python.org/psf/) was formed, a non-profit organization
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| 19 | created specifically to own Python-related Intellectual Property.
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| 20 | Zope Corporation was a sponsoring member of the PSF.
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| 21 |
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| 22 | All Python releases are Open Source (see http://www.opensource.org for
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| 23 | the Open Source Definition). Historically, most, but not all, Python
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| 24 | releases have also been GPL-compatible; the table below summarizes
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| 25 | the various releases.
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| 26 |
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| 27 | Release Derived Year Owner GPL-
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| 28 | from compatible? (1)
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| 29 |
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| 30 | 0.9.0 thru 1.2 1991-1995 CWI yes
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| 31 | 1.3 thru 1.5.2 1.2 1995-1999 CNRI yes
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| 32 | 1.6 1.5.2 2000 CNRI no
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| 33 | 2.0 1.6 2000 BeOpen.com no
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| 34 | 1.6.1 1.6 2001 CNRI yes (2)
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| 35 | 2.1 2.0+1.6.1 2001 PSF no
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| 36 | 2.0.1 2.0+1.6.1 2001 PSF yes
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| 37 | 2.1.1 2.1+2.0.1 2001 PSF yes
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| 38 | 2.1.2 2.1.1 2002 PSF yes
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| 39 | 2.1.3 2.1.2 2002 PSF yes
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| 40 | 2.2 and above 2.1.1 2001-now PSF yes
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| 41 |
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| 42 | Footnotes:
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| 43 |
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| 44 | (1) GPL-compatible doesn't mean that we're distributing Python under
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| 45 | the GPL. All Python licenses, unlike the GPL, let you distribute
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| 46 | a modified version without making your changes open source. The
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| 47 | GPL-compatible licenses make it possible to combine Python with
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| 48 | other software that is released under the GPL; the others don't.
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| 49 |
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| 50 | (2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
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| 51 | because its license has a choice of law clause. According to
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| 52 | CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
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| 53 | is "not incompatible" with the GPL.
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| 54 |
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| 55 | Thanks to the many outside volunteers who have worked under Guido's
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| 56 | direction to make these releases possible.
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| 57 |
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| 58 |
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| 59 | B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
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| 60 | ===============================================================
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| 61 |
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| 62 | PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
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| 63 | --------------------------------------------
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| 64 |
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| 65 | 1. This LICENSE AGREEMENT is between the Python Software Foundation
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| 66 | ("PSF"), and the Individual or Organization ("Licensee") accessing and
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| 67 | otherwise using this software ("Python") in source or binary form and
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| 68 | its associated documentation.
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| 69 |
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| 70 | 2. Subject to the terms and conditions of this License Agreement, PSF hereby
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| 71 | grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
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| 72 | analyze, test, perform and/or display publicly, prepare derivative works,
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| 73 | distribute, and otherwise use Python alone or in any derivative version,
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| 74 | provided, however, that PSF's License Agreement and PSF's notice of copyright,
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| 75 | i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
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| 76 | 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Python Software Foundation;
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| 77 | All Rights Reserved" are retained in Python alone or in any derivative version
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| 78 | prepared by Licensee.
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| 79 |
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| 80 | 3. In the event Licensee prepares a derivative work that is based on
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| 81 | or incorporates Python or any part thereof, and wants to make
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| 82 | the derivative work available to others as provided herein, then
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| 83 | Licensee hereby agrees to include in any such work a brief summary of
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| 84 | the changes made to Python.
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| 85 |
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| 86 | 4. PSF is making Python available to Licensee on an "AS IS"
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| 87 | basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
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| 88 | IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
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| 89 | DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
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| 90 | FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
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| 91 | INFRINGE ANY THIRD PARTY RIGHTS.
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| 92 |
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| 93 | 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
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| 94 | FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
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| 95 | A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
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| 96 | OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
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| 97 |
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| 98 | 6. This License Agreement will automatically terminate upon a material
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| 99 | breach of its terms and conditions.
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| 100 |
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| 101 | 7. Nothing in this License Agreement shall be deemed to create any
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| 102 | relationship of agency, partnership, or joint venture between PSF and
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| 103 | Licensee. This License Agreement does not grant permission to use PSF
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| 104 | trademarks or trade name in a trademark sense to endorse or promote
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| 105 | products or services of Licensee, or any third party.
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| 106 |
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| 107 | 8. By copying, installing or otherwise using Python, Licensee
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| 108 | agrees to be bound by the terms and conditions of this License
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| 109 | Agreement.
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| 110 |
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| 111 |
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| 112 | BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
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| 113 | -------------------------------------------
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| 114 |
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| 115 | BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
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| 116 |
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| 117 | 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
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| 118 | office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
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| 119 | Individual or Organization ("Licensee") accessing and otherwise using
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| 120 | this software in source or binary form and its associated
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| 121 | documentation ("the Software").
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| 122 |
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| 123 | 2. Subject to the terms and conditions of this BeOpen Python License
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| 124 | Agreement, BeOpen hereby grants Licensee a non-exclusive,
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| 125 | royalty-free, world-wide license to reproduce, analyze, test, perform
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| 126 | and/or display publicly, prepare derivative works, distribute, and
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| 127 | otherwise use the Software alone or in any derivative version,
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| 128 | provided, however, that the BeOpen Python License is retained in the
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| 129 | Software, alone or in any derivative version prepared by Licensee.
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| 130 |
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| 131 | 3. BeOpen is making the Software available to Licensee on an "AS IS"
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| 132 | basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
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| 133 | IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
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| 134 | DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
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| 135 | FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
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| 136 | INFRINGE ANY THIRD PARTY RIGHTS.
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| 137 |
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| 138 | 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
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| 139 | SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
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| 140 | AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
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| 141 | DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
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| 142 |
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| 143 | 5. This License Agreement will automatically terminate upon a material
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| 144 | breach of its terms and conditions.
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| 145 |
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| 146 | 6. This License Agreement shall be governed by and interpreted in all
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| 147 | respects by the law of the State of California, excluding conflict of
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| 148 | law provisions. Nothing in this License Agreement shall be deemed to
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| 149 | create any relationship of agency, partnership, or joint venture
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| 150 | between BeOpen and Licensee. This License Agreement does not grant
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| 151 | permission to use BeOpen trademarks or trade names in a trademark
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| 152 | sense to endorse or promote products or services of Licensee, or any
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| 153 | third party. As an exception, the "BeOpen Python" logos available at
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| 154 | http://www.pythonlabs.com/logos.html may be used according to the
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| 155 | permissions granted on that web page.
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| 156 |
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| 157 | 7. By copying, installing or otherwise using the software, Licensee
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| 158 | agrees to be bound by the terms and conditions of this License
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| 159 | Agreement.
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| 160 |
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| 161 |
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| 162 | CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
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| 163 | ---------------------------------------
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| 164 |
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| 165 | 1. This LICENSE AGREEMENT is between the Corporation for National
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| 166 | Research Initiatives, having an office at 1895 Preston White Drive,
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| 167 | Reston, VA 20191 ("CNRI"), and the Individual or Organization
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| 168 | ("Licensee") accessing and otherwise using Python 1.6.1 software in
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| 169 | source or binary form and its associated documentation.
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| 170 |
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| 171 | 2. Subject to the terms and conditions of this License Agreement, CNRI
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| 172 | hereby grants Licensee a nonexclusive, royalty-free, world-wide
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| 173 | license to reproduce, analyze, test, perform and/or display publicly,
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| 174 | prepare derivative works, distribute, and otherwise use Python 1.6.1
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| 175 | alone or in any derivative version, provided, however, that CNRI's
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| 176 | License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
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| 177 | 1995-2001 Corporation for National Research Initiatives; All Rights
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| 178 | Reserved" are retained in Python 1.6.1 alone or in any derivative
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| 179 | version prepared by Licensee. Alternately, in lieu of CNRI's License
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| 180 | Agreement, Licensee may substitute the following text (omitting the
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| 181 | quotes): "Python 1.6.1 is made available subject to the terms and
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| 182 | conditions in CNRI's License Agreement. This Agreement together with
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| 183 | Python 1.6.1 may be located on the Internet using the following
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| 184 | unique, persistent identifier (known as a handle): 1895.22/1013. This
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| 185 | Agreement may also be obtained from a proxy server on the Internet
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| 186 | using the following URL: http://hdl.handle.net/1895.22/1013".
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| 187 |
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| 188 | 3. In the event Licensee prepares a derivative work that is based on
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| 189 | or incorporates Python 1.6.1 or any part thereof, and wants to make
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| 190 | the derivative work available to others as provided herein, then
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| 191 | Licensee hereby agrees to include in any such work a brief summary of
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| 192 | the changes made to Python 1.6.1.
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| 193 |
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| 194 | 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
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| 195 | basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
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| 196 | IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
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| 197 | DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
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| 198 | FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
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| 199 | INFRINGE ANY THIRD PARTY RIGHTS.
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| 200 |
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| 201 | 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
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| 202 | 1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
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| 203 | A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
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| 204 | OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
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| 205 |
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| 206 | 6. This License Agreement will automatically terminate upon a material
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| 207 | breach of its terms and conditions.
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| 208 |
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| 209 | 7. This License Agreement shall be governed by the federal
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| 210 | intellectual property law of the United States, including without
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| 211 | limitation the federal copyright law, and, to the extent such
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| 212 | U.S. federal law does not apply, by the law of the Commonwealth of
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| 213 | Virginia, excluding Virginia's conflict of law provisions.
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| 214 | Notwithstanding the foregoing, with regard to derivative works based
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| 215 | on Python 1.6.1 that incorporate non-separable material that was
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| 216 | previously distributed under the GNU General Public License (GPL), the
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| 217 | law of the Commonwealth of Virginia shall govern this License
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| 218 | Agreement only as to issues arising under or with respect to
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| 219 | Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
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| 220 | License Agreement shall be deemed to create any relationship of
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| 221 | agency, partnership, or joint venture between CNRI and Licensee. This
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| 222 | License Agreement does not grant permission to use CNRI trademarks or
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| 223 | trade name in a trademark sense to endorse or promote products or
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| 224 | services of Licensee, or any third party.
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| 225 |
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| 226 | 8. By clicking on the "ACCEPT" button where indicated, or by copying,
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| 227 | installing or otherwise using Python 1.6.1, Licensee agrees to be
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| 228 | bound by the terms and conditions of this License Agreement.
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| 229 |
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| 230 | ACCEPT
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| 231 |
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| 232 |
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| 233 | CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
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| 234 | --------------------------------------------------
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| 235 |
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| 236 | Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
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| 237 | The Netherlands. All rights reserved.
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| 238 |
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| 239 | Permission to use, copy, modify, and distribute this software and its
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| 240 | documentation for any purpose and without fee is hereby granted,
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| 241 | provided that the above copyright notice appear in all copies and that
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| 242 | both that copyright notice and this permission notice appear in
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| 243 | supporting documentation, and that the name of Stichting Mathematisch
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| 244 | Centrum or CWI not be used in advertising or publicity pertaining to
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| 245 | distribution of the software without specific, written prior
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| 246 | permission.
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| 247 |
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| 248 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
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| 249 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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| 250 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
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| 251 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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| 252 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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| 253 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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| 254 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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