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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. 2.7 2.6 2010 PSF yes
  61. Footnotes:
  62. (1) GPL-compatible doesn't mean that we're distributing Python under
  63. the GPL. All Python licenses, unlike the GPL, let you distribute
  64. a modified version without making your changes open source. The
  65. GPL-compatible licenses make it possible to combine Python with
  66. other software that is released under the GPL; the others don't.
  67. (2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
  68. because its license has a choice of law clause. According to
  69. CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
  70. is "not incompatible" with the GPL.
  71. Thanks to the many outside volunteers who have worked under Guido's
  72. direction to make these releases possible.
  73. B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
  74. ===============================================================
  75. PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
  76. --------------------------------------------
  77. 1. This LICENSE AGREEMENT is between the Python Software Foundation
  78. ("PSF"), and the Individual or Organization ("Licensee") accessing and
  79. otherwise using this software ("Python") in source or binary form and
  80. its associated documentation.
  81. 2. Subject to the terms and conditions of this License Agreement, PSF hereby
  82. grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
  83. analyze, test, perform and/or display publicly, prepare derivative works,
  84. distribute, and otherwise use Python alone or in any derivative version,
  85. provided, however, that PSF's License Agreement and PSF's notice of copyright,
  86. i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
  87. Python Software Foundation; All Rights Reserved" are retained in Python alone or
  88. in any derivative version prepared by Licensee.
  89. 3. In the event Licensee prepares a derivative work that is based on
  90. or incorporates Python or any part thereof, and wants to make
  91. the derivative work available to others as provided herein, then
  92. Licensee hereby agrees to include in any such work a brief summary of
  93. the changes made to Python.
  94. 4. PSF is making Python available to Licensee on an "AS IS"
  95. basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  96. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
  97. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  98. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
  99. INFRINGE ANY THIRD PARTY RIGHTS.
  100. 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
  101. FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
  102. A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
  103. OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  104. 6. This License Agreement will automatically terminate upon a material
  105. breach of its terms and conditions.
  106. 7. Nothing in this License Agreement shall be deemed to create any
  107. relationship of agency, partnership, or joint venture between PSF and
  108. Licensee. This License Agreement does not grant permission to use PSF
  109. trademarks or trade name in a trademark sense to endorse or promote
  110. products or services of Licensee, or any third party.
  111. 8. By copying, installing or otherwise using Python, Licensee
  112. agrees to be bound by the terms and conditions of this License
  113. Agreement.
  114. BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
  115. -------------------------------------------
  116. BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
  117. 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
  118. office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
  119. Individual or Organization ("Licensee") accessing and otherwise using
  120. this software in source or binary form and its associated
  121. documentation ("the Software").
  122. 2. Subject to the terms and conditions of this BeOpen Python License
  123. Agreement, BeOpen hereby grants Licensee a non-exclusive,
  124. royalty-free, world-wide license to reproduce, analyze, test, perform
  125. and/or display publicly, prepare derivative works, distribute, and
  126. otherwise use the Software alone or in any derivative version,
  127. provided, however, that the BeOpen Python License is retained in the
  128. Software, alone or in any derivative version prepared by Licensee.
  129. 3. BeOpen is making the Software available to Licensee on an "AS IS"
  130. basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  131. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
  132. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  133. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
  134. INFRINGE ANY THIRD PARTY RIGHTS.
  135. 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
  136. SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
  137. AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
  138. DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  139. 5. This License Agreement will automatically terminate upon a material
  140. breach of its terms and conditions.
  141. 6. This License Agreement shall be governed by and interpreted in all
  142. respects by the law of the State of California, excluding conflict of
  143. law provisions. Nothing in this License Agreement shall be deemed to
  144. create any relationship of agency, partnership, or joint venture
  145. between BeOpen and Licensee. This License Agreement does not grant
  146. permission to use BeOpen trademarks or trade names in a trademark
  147. sense to endorse or promote products or services of Licensee, or any
  148. third party. As an exception, the "BeOpen Python" logos available at
  149. http://www.pythonlabs.com/logos.html may be used according to the
  150. permissions granted on that web page.
  151. 7. By copying, installing or otherwise using the software, Licensee
  152. agrees to be bound by the terms and conditions of this License
  153. Agreement.
  154. CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
  155. ---------------------------------------
  156. 1. This LICENSE AGREEMENT is between the Corporation for National
  157. Research Initiatives, having an office at 1895 Preston White Drive,
  158. Reston, VA 20191 ("CNRI"), and the Individual or Organization
  159. ("Licensee") accessing and otherwise using Python 1.6.1 software in
  160. source or binary form and its associated documentation.
  161. 2. Subject to the terms and conditions of this License Agreement, CNRI
  162. hereby grants Licensee a nonexclusive, royalty-free, world-wide
  163. license to reproduce, analyze, test, perform and/or display publicly,
  164. prepare derivative works, distribute, and otherwise use Python 1.6.1
  165. alone or in any derivative version, provided, however, that CNRI's
  166. License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
  167. 1995-2001 Corporation for National Research Initiatives; All Rights
  168. Reserved" are retained in Python 1.6.1 alone or in any derivative
  169. version prepared by Licensee. Alternately, in lieu of CNRI's License
  170. Agreement, Licensee may substitute the following text (omitting the
  171. quotes): "Python 1.6.1 is made available subject to the terms and
  172. conditions in CNRI's License Agreement. This Agreement together with
  173. Python 1.6.1 may be located on the Internet using the following
  174. unique, persistent identifier (known as a handle): 1895.22/1013. This
  175. Agreement may also be obtained from a proxy server on the Internet
  176. using the following URL: http://hdl.handle.net/1895.22/1013".
  177. 3. In the event Licensee prepares a derivative work that is based on
  178. or incorporates Python 1.6.1 or any part thereof, and wants to make
  179. the derivative work available to others as provided herein, then
  180. Licensee hereby agrees to include in any such work a brief summary of
  181. the changes made to Python 1.6.1.
  182. 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
  183. basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  184. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
  185. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  186. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
  187. INFRINGE ANY THIRD PARTY RIGHTS.
  188. 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
  189. 1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
  190. A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
  191. OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  192. 6. This License Agreement will automatically terminate upon a material
  193. breach of its terms and conditions.
  194. 7. This License Agreement shall be governed by the federal
  195. intellectual property law of the United States, including without
  196. limitation the federal copyright law, and, to the extent such
  197. U.S. federal law does not apply, by the law of the Commonwealth of
  198. Virginia, excluding Virginia's conflict of law provisions.
  199. Notwithstanding the foregoing, with regard to derivative works based
  200. on Python 1.6.1 that incorporate non-separable material that was
  201. previously distributed under the GNU General Public License (GPL), the
  202. law of the Commonwealth of Virginia shall govern this License
  203. Agreement only as to issues arising under or with respect to
  204. Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
  205. License Agreement shall be deemed to create any relationship of
  206. agency, partnership, or joint venture between CNRI and Licensee. This
  207. License Agreement does not grant permission to use CNRI trademarks or
  208. trade name in a trademark sense to endorse or promote products or
  209. services of Licensee, or any third party.
  210. 8. By clicking on the "ACCEPT" button where indicated, or by copying,
  211. installing or otherwise using Python 1.6.1, Licensee agrees to be
  212. bound by the terms and conditions of this License Agreement.
  213. ACCEPT
  214. CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
  215. --------------------------------------------------
  216. Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
  217. The Netherlands. All rights reserved.
  218. Permission to use, copy, modify, and distribute this software and its
  219. documentation for any purpose and without fee is hereby granted,
  220. provided that the above copyright notice appear in all copies and that
  221. both that copyright notice and this permission notice appear in
  222. supporting documentation, and that the name of Stichting Mathematisch
  223. Centrum or CWI not be used in advertising or publicity pertaining to
  224. distribution of the software without specific, written prior
  225. permission.
  226. STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
  227. THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  228. FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
  229. FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  230. WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  231. ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  232. OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.