| 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 (now Zope | 
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| 17 | Corporation, see http://www.zope.com).  In 2001, the Python Software | 
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| 18 | Foundation (PSF, see http://www.python.org/psf/) was formed, a | 
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| 19 | non-profit organization created specifically to own Python-related | 
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| 20 | Intellectual Property.  Zope Corporation is a sponsoring member of | 
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| 21 | the PSF. | 
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| 22 |  | 
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| 23 | All Python releases are Open Source (see http://www.opensource.org for | 
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| 24 | the Open Source Definition).  Historically, most, but not all, Python | 
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| 25 | releases have also been GPL-compatible; the table below summarizes | 
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| 26 | the various releases. | 
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| 27 |  | 
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| 28 | Release         Derived     Year        Owner       GPL- | 
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| 29 | from                                compatible? (1) | 
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| 30 |  | 
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| 31 | 0.9.0 thru 1.2              1991-1995   CWI         yes | 
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| 32 | 1.3 thru 1.5.2  1.2         1995-1999   CNRI        yes | 
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| 33 | 1.6             1.5.2       2000        CNRI        no | 
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| 34 | 2.0             1.6         2000        BeOpen.com  no | 
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| 35 | 1.6.1           1.6         2001        CNRI        yes (2) | 
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| 36 | 2.1             2.0+1.6.1   2001        PSF         no | 
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| 37 | 2.0.1           2.0+1.6.1   2001        PSF         yes | 
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| 38 | 2.1.1           2.1+2.0.1   2001        PSF         yes | 
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| 39 | 2.2             2.1.1       2001        PSF         yes | 
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| 40 | 2.1.2           2.1.1       2002        PSF         yes | 
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| 41 | 2.1.3           2.1.2       2002        PSF         yes | 
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| 42 | 2.2.1           2.2         2002        PSF         yes | 
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| 43 | 2.2.2           2.2.1       2002        PSF         yes | 
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| 44 | 2.2.3           2.2.2       2003        PSF         yes | 
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| 45 | 2.3             2.2.2       2002-2003   PSF         yes | 
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| 46 | 2.3.1           2.3         2002-2003   PSF         yes | 
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| 47 | 2.3.2           2.3.1       2002-2003   PSF         yes | 
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| 48 | 2.3.3           2.3.2       2002-2003   PSF         yes | 
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| 49 | 2.3.4           2.3.3       2004        PSF         yes | 
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| 50 | 2.3.5           2.3.4       2005        PSF         yes | 
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| 51 | 2.4             2.3         2004        PSF         yes | 
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| 52 | 2.4.1           2.4         2005        PSF         yes | 
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| 53 | 2.4.2           2.4.1       2005        PSF         yes | 
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| 54 | 2.4.3           2.4.2       2006        PSF         yes | 
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| 55 | 2.5             2.4         2006        PSF         yes | 
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| 56 |  | 
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| 57 | Footnotes: | 
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| 58 |  | 
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| 59 | (1) GPL-compatible doesn't mean that we're distributing Python under | 
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| 60 | the GPL.  All Python licenses, unlike the GPL, let you distribute | 
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| 61 | a modified version without making your changes open source.  The | 
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| 62 | GPL-compatible licenses make it possible to combine Python with | 
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| 63 | other software that is released under the GPL; the others don't. | 
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| 64 |  | 
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| 65 | (2) According to Richard Stallman, 1.6.1 is not GPL-compatible, | 
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| 66 | because its license has a choice of law clause.  According to | 
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| 67 | CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1 | 
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| 68 | is "not incompatible" with the GPL. | 
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| 69 |  | 
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| 70 | Thanks to the many outside volunteers who have worked under Guido's | 
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| 71 | direction to make these releases possible. | 
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| 72 |  | 
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| 73 |  | 
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| 74 | B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON | 
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| 75 | =============================================================== | 
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| 76 |  | 
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| 77 | PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2 | 
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| 78 | -------------------------------------------- | 
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| 79 |  | 
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| 80 | 1. This LICENSE AGREEMENT is between the Python Software Foundation | 
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| 81 | ("PSF"), and the Individual or Organization ("Licensee") accessing and | 
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| 82 | otherwise using this software ("Python") in source or binary form and | 
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| 83 | its associated documentation. | 
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| 84 |  | 
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| 85 | 2. Subject to the terms and conditions of this License Agreement, PSF | 
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| 86 | hereby grants Licensee a nonexclusive, royalty-free, world-wide | 
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| 87 | license to reproduce, analyze, test, perform and/or display publicly, | 
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| 88 | prepare derivative works, distribute, and otherwise use Python | 
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| 89 | alone or in any derivative version, provided, however, that PSF's | 
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| 90 | License Agreement and PSF's notice of copyright, i.e., "Copyright (c) | 
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| 91 | 2001, 2002, 2003, 2004, 2005, 2006 Python Software Foundation; All Rights | 
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| 92 | Reserved" are retained in Python alone or in any derivative version | 
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| 93 | prepared by Licensee. | 
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| 94 |  | 
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| 95 | 3. In the event Licensee prepares a derivative work that is based on | 
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| 96 | or incorporates Python or any part thereof, and wants to make | 
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| 97 | the derivative work available to others as provided herein, then | 
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| 98 | Licensee hereby agrees to include in any such work a brief summary of | 
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| 99 | the changes made to Python. | 
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| 100 |  | 
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| 101 | 4. PSF is making Python available to Licensee on an "AS IS" | 
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| 102 | basis.  PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR | 
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| 103 | IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND | 
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| 104 | DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS | 
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| 105 | FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT | 
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| 106 | INFRINGE ANY THIRD PARTY RIGHTS. | 
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| 107 |  | 
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| 108 | 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON | 
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| 109 | FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS | 
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| 110 | A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON, | 
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| 111 | OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. | 
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| 112 |  | 
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| 113 | 6. This License Agreement will automatically terminate upon a material | 
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| 114 | breach of its terms and conditions. | 
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| 115 |  | 
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| 116 | 7. Nothing in this License Agreement shall be deemed to create any | 
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| 117 | relationship of agency, partnership, or joint venture between PSF and | 
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| 118 | Licensee.  This License Agreement does not grant permission to use PSF | 
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| 119 | trademarks or trade name in a trademark sense to endorse or promote | 
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| 120 | products or services of Licensee, or any third party. | 
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| 121 |  | 
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| 122 | 8. By copying, installing or otherwise using Python, Licensee | 
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| 123 | agrees to be bound by the terms and conditions of this License | 
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| 124 | Agreement. | 
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| 125 |  | 
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| 126 |  | 
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| 127 | BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0 | 
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| 128 | ------------------------------------------- | 
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| 129 |  | 
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| 130 | BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1 | 
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| 131 |  | 
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| 132 | 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an | 
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| 133 | office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the | 
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| 134 | Individual or Organization ("Licensee") accessing and otherwise using | 
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| 135 | this software in source or binary form and its associated | 
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| 136 | documentation ("the Software"). | 
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| 137 |  | 
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| 138 | 2. Subject to the terms and conditions of this BeOpen Python License | 
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| 139 | Agreement, BeOpen hereby grants Licensee a non-exclusive, | 
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| 140 | royalty-free, world-wide license to reproduce, analyze, test, perform | 
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| 141 | and/or display publicly, prepare derivative works, distribute, and | 
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| 142 | otherwise use the Software alone or in any derivative version, | 
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| 143 | provided, however, that the BeOpen Python License is retained in the | 
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| 144 | Software, alone or in any derivative version prepared by Licensee. | 
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| 145 |  | 
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| 146 | 3. BeOpen is making the Software available to Licensee on an "AS IS" | 
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| 147 | basis.  BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR | 
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| 148 | IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND | 
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| 149 | DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS | 
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| 150 | FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT | 
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| 151 | INFRINGE ANY THIRD PARTY RIGHTS. | 
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| 152 |  | 
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| 153 | 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE | 
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| 154 | SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS | 
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| 155 | AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY | 
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| 156 | DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. | 
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| 157 |  | 
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| 158 | 5. This License Agreement will automatically terminate upon a material | 
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| 159 | breach of its terms and conditions. | 
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| 160 |  | 
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| 161 | 6. This License Agreement shall be governed by and interpreted in all | 
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| 162 | respects by the law of the State of California, excluding conflict of | 
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| 163 | law provisions.  Nothing in this License Agreement shall be deemed to | 
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| 164 | create any relationship of agency, partnership, or joint venture | 
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| 165 | between BeOpen and Licensee.  This License Agreement does not grant | 
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| 166 | permission to use BeOpen trademarks or trade names in a trademark | 
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| 167 | sense to endorse or promote products or services of Licensee, or any | 
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| 168 | third party.  As an exception, the "BeOpen Python" logos available at | 
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| 169 | http://www.pythonlabs.com/logos.html may be used according to the | 
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| 170 | permissions granted on that web page. | 
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| 171 |  | 
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| 172 | 7. By copying, installing or otherwise using the software, Licensee | 
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| 173 | agrees to be bound by the terms and conditions of this License | 
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| 174 | Agreement. | 
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| 175 |  | 
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| 176 |  | 
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| 177 | CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1 | 
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| 178 | --------------------------------------- | 
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| 179 |  | 
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| 180 | 1. This LICENSE AGREEMENT is between the Corporation for National | 
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| 181 | Research Initiatives, having an office at 1895 Preston White Drive, | 
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| 182 | Reston, VA 20191 ("CNRI"), and the Individual or Organization | 
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| 183 | ("Licensee") accessing and otherwise using Python 1.6.1 software in | 
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| 184 | source or binary form and its associated documentation. | 
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| 185 |  | 
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| 186 | 2. Subject to the terms and conditions of this License Agreement, CNRI | 
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| 187 | hereby grants Licensee a nonexclusive, royalty-free, world-wide | 
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| 188 | license to reproduce, analyze, test, perform and/or display publicly, | 
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| 189 | prepare derivative works, distribute, and otherwise use Python 1.6.1 | 
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| 190 | alone or in any derivative version, provided, however, that CNRI's | 
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| 191 | License Agreement and CNRI's notice of copyright, i.e., "Copyright (c) | 
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| 192 | 1995-2001 Corporation for National Research Initiatives; All Rights | 
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| 193 | Reserved" are retained in Python 1.6.1 alone or in any derivative | 
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| 194 | version prepared by Licensee.  Alternately, in lieu of CNRI's License | 
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| 195 | Agreement, Licensee may substitute the following text (omitting the | 
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| 196 | quotes): "Python 1.6.1 is made available subject to the terms and | 
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| 197 | conditions in CNRI's License Agreement.  This Agreement together with | 
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| 198 | Python 1.6.1 may be located on the Internet using the following | 
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| 199 | unique, persistent identifier (known as a handle): 1895.22/1013.  This | 
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| 200 | Agreement may also be obtained from a proxy server on the Internet | 
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| 201 | using the following URL: http://hdl.handle.net/1895.22/1013". | 
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| 202 |  | 
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| 203 | 3. In the event Licensee prepares a derivative work that is based on | 
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| 204 | or incorporates Python 1.6.1 or any part thereof, and wants to make | 
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| 205 | the derivative work available to others as provided herein, then | 
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| 206 | Licensee hereby agrees to include in any such work a brief summary of | 
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| 207 | the changes made to Python 1.6.1. | 
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| 208 |  | 
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| 209 | 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS" | 
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| 210 | basis.  CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR | 
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| 211 | IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND | 
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| 212 | DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS | 
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| 213 | FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT | 
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| 214 | INFRINGE ANY THIRD PARTY RIGHTS. | 
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| 215 |  | 
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| 216 | 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON | 
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| 217 | 1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS | 
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| 218 | A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1, | 
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| 219 | OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. | 
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| 220 |  | 
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| 221 | 6. This License Agreement will automatically terminate upon a material | 
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| 222 | breach of its terms and conditions. | 
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| 223 |  | 
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| 224 | 7. This License Agreement shall be governed by the federal | 
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| 225 | intellectual property law of the United States, including without | 
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| 226 | limitation the federal copyright law, and, to the extent such | 
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| 227 | U.S. federal law does not apply, by the law of the Commonwealth of | 
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| 228 | Virginia, excluding Virginia's conflict of law provisions. | 
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| 229 | Notwithstanding the foregoing, with regard to derivative works based | 
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| 230 | on Python 1.6.1 that incorporate non-separable material that was | 
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| 231 | previously distributed under the GNU General Public License (GPL), the | 
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| 232 | law of the Commonwealth of Virginia shall govern this License | 
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| 233 | Agreement only as to issues arising under or with respect to | 
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| 234 | Paragraphs 4, 5, and 7 of this License Agreement.  Nothing in this | 
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| 235 | License Agreement shall be deemed to create any relationship of | 
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| 236 | agency, partnership, or joint venture between CNRI and Licensee.  This | 
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| 237 | License Agreement does not grant permission to use CNRI trademarks or | 
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| 238 | trade name in a trademark sense to endorse or promote products or | 
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| 239 | services of Licensee, or any third party. | 
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| 240 |  | 
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| 241 | 8. By clicking on the "ACCEPT" button where indicated, or by copying, | 
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| 242 | installing or otherwise using Python 1.6.1, Licensee agrees to be | 
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| 243 | bound by the terms and conditions of this License Agreement. | 
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| 244 |  | 
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| 245 | ACCEPT | 
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| 246 |  | 
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| 247 |  | 
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| 248 | CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2 | 
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| 249 | -------------------------------------------------- | 
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| 250 |  | 
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| 251 | Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam, | 
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| 252 | The Netherlands.  All rights reserved. | 
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| 253 |  | 
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| 254 | Permission to use, copy, modify, and distribute this software and its | 
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| 255 | documentation for any purpose and without fee is hereby granted, | 
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| 256 | provided that the above copyright notice appear in all copies and that | 
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| 257 | both that copyright notice and this permission notice appear in | 
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| 258 | supporting documentation, and that the name of Stichting Mathematisch | 
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| 259 | Centrum or CWI not be used in advertising or publicity pertaining to | 
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| 260 | distribution of the software without specific, written prior | 
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| 261 | permission. | 
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| 262 |  | 
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| 263 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO | 
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| 264 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | 
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| 265 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE | 
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| 266 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | 
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| 267 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | 
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| 268 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | 
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| 269 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | 
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