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  1. A. HISTORY OF THE SOFTWARE
  2. ==========================
  3. Python was created in the early 1990s by Guido van Rossum at Stichting
  4. Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
  5. as a successor of a language called ABC. Guido remains Python's
  6. principal author, although it includes many contributions from others.
  7. In 1995, Guido continued his work on Python at the Corporation for
  8. National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
  9. in Reston, Virginia where he released several versions of the
  10. software.
  11. In May 2000, Guido and the Python core development team moved to
  12. BeOpen.com to form the BeOpen PythonLabs team. In October of the same
  13. year, the PythonLabs team moved to Digital Creations (now Zope
  14. Corporation, see http://www.zope.com). In 2001, the Python Software
  15. Foundation (PSF, see http://www.python.org/psf/) was formed, a
  16. non-profit organization created specifically to own Python-related
  17. Intellectual Property. Zope Corporation is a sponsoring member of
  18. the PSF.
  19. All Python releases are Open Source (see http://www.opensource.org for
  20. the Open Source Definition). Historically, most, but not all, Python
  21. releases have also been GPL-compatible; the table below summarizes
  22. the various releases.
  23. Release Derived Year Owner GPL-
  24. from compatible? (1)
  25. 0.9.0 thru 1.2 1991-1995 CWI yes
  26. 1.3 thru 1.5.2 1.2 1995-1999 CNRI yes
  27. 1.6 1.5.2 2000 CNRI no
  28. 2.0 1.6 2000 BeOpen.com no
  29. 1.6.1 1.6 2001 CNRI yes (2)
  30. 2.1 2.0+1.6.1 2001 PSF no
  31. 2.0.1 2.0+1.6.1 2001 PSF yes
  32. 2.1.1 2.1+2.0.1 2001 PSF yes
  33. 2.2 2.1.1 2001 PSF yes
  34. 2.1.2 2.1.1 2002 PSF yes
  35. 2.1.3 2.1.2 2002 PSF yes
  36. 2.2.1 2.2 2002 PSF yes
  37. 2.2.2 2.2.1 2002 PSF yes
  38. 2.2.3 2.2.2 2003 PSF yes
  39. 2.3 2.2.2 2002-2003 PSF yes
  40. 2.3.1 2.3 2002-2003 PSF yes
  41. 2.3.2 2.3.1 2002-2003 PSF yes
  42. 2.3.3 2.3.2 2002-2003 PSF yes
  43. 2.3.4 2.3.3 2004 PSF yes
  44. 2.3.5 2.3.4 2005 PSF yes
  45. 2.4 2.3 2004 PSF yes
  46. 2.4.1 2.4 2005 PSF yes
  47. 2.4.2 2.4.1 2005 PSF yes
  48. 2.4.3 2.4.2 2006 PSF yes
  49. 2.4.4 2.4.3 2006 PSF yes
  50. 2.5 2.4 2006 PSF yes
  51. 2.5.1 2.5 2007 PSF yes
  52. 2.5.2 2.5.1 2008 PSF yes
  53. 2.5.3 2.5.2 2008 PSF yes
  54. 2.6 2.5 2008 PSF yes
  55. 2.6.1 2.6 2008 PSF yes
  56. 2.6.2 2.6.1 2009 PSF yes
  57. 2.6.3 2.6.2 2009 PSF yes
  58. 2.6.4 2.6.3 2009 PSF yes
  59. 2.6.5 2.6.4 2010 PSF yes
  60. 3.0 2.6 2008 PSF yes
  61. 3.0.1 3.0 2009 PSF yes
  62. 3.1 3.0.1 2009 PSF yes
  63. 3.1.1 3.1 2009 PSF yes
  64. 3.1.2 3.1 2010 PSF yes
  65. Footnotes:
  66. (1) GPL-compatible doesn't mean that we're distributing Python under
  67. the GPL. All Python licenses, unlike the GPL, let you distribute
  68. a modified version without making your changes open source. The
  69. GPL-compatible licenses make it possible to combine Python with
  70. other software that is released under the GPL; the others don't.
  71. (2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
  72. because its license has a choice of law clause. According to
  73. CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
  74. is "not incompatible" with the GPL.
  75. Thanks to the many outside volunteers who have worked under Guido's
  76. direction to make these releases possible.
  77. B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
  78. ===============================================================
  79. PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
  80. --------------------------------------------
  81. 1. This LICENSE AGREEMENT is between the Python Software Foundation
  82. ("PSF"), and the Individual or Organization ("Licensee") accessing and
  83. otherwise using this software ("Python") in source or binary form and
  84. its associated documentation.
  85. 2. Subject to the terms and conditions of this License Agreement, PSF hereby
  86. grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
  87. analyze, test, perform and/or display publicly, prepare derivative works,
  88. distribute, and otherwise use Python alone or in any derivative version,
  89. provided, however, that PSF's License Agreement and PSF's notice of copyright,
  90. i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
  91. Python Software Foundation; All Rights Reserved" are retained in Python alone or
  92. in any derivative version prepared by Licensee.
  93. 3. In the event Licensee prepares a derivative work that is based on
  94. or incorporates Python or any part thereof, and wants to make
  95. the derivative work available to others as provided herein, then
  96. Licensee hereby agrees to include in any such work a brief summary of
  97. the changes made to Python.
  98. 4. PSF is making Python available to Licensee on an "AS IS"
  99. basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  100. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
  101. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  102. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
  103. INFRINGE ANY THIRD PARTY RIGHTS.
  104. 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
  105. FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
  106. A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
  107. OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  108. 6. This License Agreement will automatically terminate upon a material
  109. breach of its terms and conditions.
  110. 7. Nothing in this License Agreement shall be deemed to create any
  111. relationship of agency, partnership, or joint venture between PSF and
  112. Licensee. This License Agreement does not grant permission to use PSF
  113. trademarks or trade name in a trademark sense to endorse or promote
  114. products or services of Licensee, or any third party.
  115. 8. By copying, installing or otherwise using Python, Licensee
  116. agrees to be bound by the terms and conditions of this License
  117. Agreement.
  118. BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
  119. -------------------------------------------
  120. BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
  121. 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
  122. office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
  123. Individual or Organization ("Licensee") accessing and otherwise using
  124. this software in source or binary form and its associated
  125. documentation ("the Software").
  126. 2. Subject to the terms and conditions of this BeOpen Python License
  127. Agreement, BeOpen hereby grants Licensee a non-exclusive,
  128. royalty-free, world-wide license to reproduce, analyze, test, perform
  129. and/or display publicly, prepare derivative works, distribute, and
  130. otherwise use the Software alone or in any derivative version,
  131. provided, however, that the BeOpen Python License is retained in the
  132. Software, alone or in any derivative version prepared by Licensee.
  133. 3. BeOpen is making the Software available to Licensee on an "AS IS"
  134. basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  135. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
  136. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  137. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
  138. INFRINGE ANY THIRD PARTY RIGHTS.
  139. 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
  140. SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
  141. AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
  142. DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  143. 5. This License Agreement will automatically terminate upon a material
  144. breach of its terms and conditions.
  145. 6. This License Agreement shall be governed by and interpreted in all
  146. respects by the law of the State of California, excluding conflict of
  147. law provisions. Nothing in this License Agreement shall be deemed to
  148. create any relationship of agency, partnership, or joint venture
  149. between BeOpen and Licensee. This License Agreement does not grant
  150. permission to use BeOpen trademarks or trade names in a trademark
  151. sense to endorse or promote products or services of Licensee, or any
  152. third party. As an exception, the "BeOpen Python" logos available at
  153. http://www.pythonlabs.com/logos.html may be used according to the
  154. permissions granted on that web page.
  155. 7. By copying, installing or otherwise using the software, Licensee
  156. agrees to be bound by the terms and conditions of this License
  157. Agreement.
  158. CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
  159. ---------------------------------------
  160. 1. This LICENSE AGREEMENT is between the Corporation for National
  161. Research Initiatives, having an office at 1895 Preston White Drive,
  162. Reston, VA 20191 ("CNRI"), and the Individual or Organization
  163. ("Licensee") accessing and otherwise using Python 1.6.1 software in
  164. source or binary form and its associated documentation.
  165. 2. Subject to the terms and conditions of this License Agreement, CNRI
  166. hereby grants Licensee a nonexclusive, royalty-free, world-wide
  167. license to reproduce, analyze, test, perform and/or display publicly,
  168. prepare derivative works, distribute, and otherwise use Python 1.6.1
  169. alone or in any derivative version, provided, however, that CNRI's
  170. License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
  171. 1995-2001 Corporation for National Research Initiatives; All Rights
  172. Reserved" are retained in Python 1.6.1 alone or in any derivative
  173. version prepared by Licensee. Alternately, in lieu of CNRI's License
  174. Agreement, Licensee may substitute the following text (omitting the
  175. quotes): "Python 1.6.1 is made available subject to the terms and
  176. conditions in CNRI's License Agreement. This Agreement together with
  177. Python 1.6.1 may be located on the Internet using the following
  178. unique, persistent identifier (known as a handle): 1895.22/1013. This
  179. Agreement may also be obtained from a proxy server on the Internet
  180. using the following URL: http://hdl.handle.net/1895.22/1013".
  181. 3. In the event Licensee prepares a derivative work that is based on
  182. or incorporates Python 1.6.1 or any part thereof, and wants to make
  183. the derivative work available to others as provided herein, then
  184. Licensee hereby agrees to include in any such work a brief summary of
  185. the changes made to Python 1.6.1.
  186. 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
  187. basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  188. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
  189. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  190. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
  191. INFRINGE ANY THIRD PARTY RIGHTS.
  192. 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
  193. 1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
  194. A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
  195. OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  196. 6. This License Agreement will automatically terminate upon a material
  197. breach of its terms and conditions.
  198. 7. This License Agreement shall be governed by the federal
  199. intellectual property law of the United States, including without
  200. limitation the federal copyright law, and, to the extent such
  201. U.S. federal law does not apply, by the law of the Commonwealth of
  202. Virginia, excluding Virginia's conflict of law provisions.
  203. Notwithstanding the foregoing, with regard to derivative works based
  204. on Python 1.6.1 that incorporate non-separable material that was
  205. previously distributed under the GNU General Public License (GPL), the
  206. law of the Commonwealth of Virginia shall govern this License
  207. Agreement only as to issues arising under or with respect to
  208. Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
  209. License Agreement shall be deemed to create any relationship of
  210. agency, partnership, or joint venture between CNRI and Licensee. This
  211. License Agreement does not grant permission to use CNRI trademarks or
  212. trade name in a trademark sense to endorse or promote products or
  213. services of Licensee, or any third party.
  214. 8. By clicking on the "ACCEPT" button where indicated, or by copying,
  215. installing or otherwise using Python 1.6.1, Licensee agrees to be
  216. bound by the terms and conditions of this License Agreement.
  217. ACCEPT
  218. CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
  219. --------------------------------------------------
  220. Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
  221. The Netherlands. All rights reserved.
  222. Permission to use, copy, modify, and distribute this software and its
  223. documentation for any purpose and without fee is hereby granted,
  224. provided that the above copyright notice appear in all copies and that
  225. both that copyright notice and this permission notice appear in
  226. supporting documentation, and that the name of Stichting Mathematisch
  227. Centrum or CWI not be used in advertising or publicity pertaining to
  228. distribution of the software without specific, written prior
  229. permission.
  230. STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
  231. THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  232. FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
  233. FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  234. WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  235. ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  236. OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.