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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. 2.1.2 2.1.1 2002 PSF yes
  34. 2.1.3 2.1.2 2002 PSF yes
  35. 2.2 and above 2.1.1 2001-now PSF yes
  36. Footnotes:
  37. (1) GPL-compatible doesn't mean that we're distributing Python under
  38. the GPL. All Python licenses, unlike the GPL, let you distribute
  39. a modified version without making your changes open source. The
  40. GPL-compatible licenses make it possible to combine Python with
  41. other software that is released under the GPL; the others don't.
  42. (2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
  43. because its license has a choice of law clause. According to
  44. CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
  45. is "not incompatible" with the GPL.
  46. Thanks to the many outside volunteers who have worked under Guido's
  47. direction to make these releases possible.
  48. B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
  49. ===============================================================
  50. PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
  51. --------------------------------------------
  52. 1. This LICENSE AGREEMENT is between the Python Software Foundation
  53. ("PSF"), and the Individual or Organization ("Licensee") accessing and
  54. otherwise using this software ("Python") in source or binary form and
  55. its associated documentation.
  56. 2. Subject to the terms and conditions of this License Agreement, PSF hereby
  57. grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
  58. analyze, test, perform and/or display publicly, prepare derivative works,
  59. distribute, and otherwise use Python alone or in any derivative version,
  60. provided, however, that PSF's License Agreement and PSF's notice of copyright,
  61. i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
  62. 2011, 2012, 2013, 2014 Python Software Foundation; All Rights Reserved" are retained
  63. in Python alone or in any derivative version prepared by Licensee.
  64. 3. In the event Licensee prepares a derivative work that is based on
  65. or incorporates Python or any part thereof, and wants to make
  66. the derivative work available to others as provided herein, then
  67. Licensee hereby agrees to include in any such work a brief summary of
  68. the changes made to Python.
  69. 4. PSF is making Python available to Licensee on an "AS IS"
  70. basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  71. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
  72. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  73. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
  74. INFRINGE ANY THIRD PARTY RIGHTS.
  75. 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
  76. FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
  77. A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
  78. OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  79. 6. This License Agreement will automatically terminate upon a material
  80. breach of its terms and conditions.
  81. 7. Nothing in this License Agreement shall be deemed to create any
  82. relationship of agency, partnership, or joint venture between PSF and
  83. Licensee. This License Agreement does not grant permission to use PSF
  84. trademarks or trade name in a trademark sense to endorse or promote
  85. products or services of Licensee, or any third party.
  86. 8. By copying, installing or otherwise using Python, Licensee
  87. agrees to be bound by the terms and conditions of this License
  88. Agreement.
  89. BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
  90. -------------------------------------------
  91. BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
  92. 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
  93. office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
  94. Individual or Organization ("Licensee") accessing and otherwise using
  95. this software in source or binary form and its associated
  96. documentation ("the Software").
  97. 2. Subject to the terms and conditions of this BeOpen Python License
  98. Agreement, BeOpen hereby grants Licensee a non-exclusive,
  99. royalty-free, world-wide license to reproduce, analyze, test, perform
  100. and/or display publicly, prepare derivative works, distribute, and
  101. otherwise use the Software alone or in any derivative version,
  102. provided, however, that the BeOpen Python License is retained in the
  103. Software, alone or in any derivative version prepared by Licensee.
  104. 3. BeOpen is making the Software available to Licensee on an "AS IS"
  105. basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  106. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
  107. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  108. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
  109. INFRINGE ANY THIRD PARTY RIGHTS.
  110. 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
  111. SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
  112. AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
  113. DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  114. 5. This License Agreement will automatically terminate upon a material
  115. breach of its terms and conditions.
  116. 6. This License Agreement shall be governed by and interpreted in all
  117. respects by the law of the State of California, excluding conflict of
  118. law provisions. Nothing in this License Agreement shall be deemed to
  119. create any relationship of agency, partnership, or joint venture
  120. between BeOpen and Licensee. This License Agreement does not grant
  121. permission to use BeOpen trademarks or trade names in a trademark
  122. sense to endorse or promote products or services of Licensee, or any
  123. third party. As an exception, the "BeOpen Python" logos available at
  124. http://www.pythonlabs.com/logos.html may be used according to the
  125. permissions granted on that web page.
  126. 7. By copying, installing or otherwise using the software, Licensee
  127. agrees to be bound by the terms and conditions of this License
  128. Agreement.
  129. CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
  130. ---------------------------------------
  131. 1. This LICENSE AGREEMENT is between the Corporation for National
  132. Research Initiatives, having an office at 1895 Preston White Drive,
  133. Reston, VA 20191 ("CNRI"), and the Individual or Organization
  134. ("Licensee") accessing and otherwise using Python 1.6.1 software in
  135. source or binary form and its associated documentation.
  136. 2. Subject to the terms and conditions of this License Agreement, CNRI
  137. hereby grants Licensee a nonexclusive, royalty-free, world-wide
  138. license to reproduce, analyze, test, perform and/or display publicly,
  139. prepare derivative works, distribute, and otherwise use Python 1.6.1
  140. alone or in any derivative version, provided, however, that CNRI's
  141. License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
  142. 1995-2001 Corporation for National Research Initiatives; All Rights
  143. Reserved" are retained in Python 1.6.1 alone or in any derivative
  144. version prepared by Licensee. Alternately, in lieu of CNRI's License
  145. Agreement, Licensee may substitute the following text (omitting the
  146. quotes): "Python 1.6.1 is made available subject to the terms and
  147. conditions in CNRI's License Agreement. This Agreement together with
  148. Python 1.6.1 may be located on the Internet using the following
  149. unique, persistent identifier (known as a handle): 1895.22/1013. This
  150. Agreement may also be obtained from a proxy server on the Internet
  151. using the following URL: http://hdl.handle.net/1895.22/1013".
  152. 3. In the event Licensee prepares a derivative work that is based on
  153. or incorporates Python 1.6.1 or any part thereof, and wants to make
  154. the derivative work available to others as provided herein, then
  155. Licensee hereby agrees to include in any such work a brief summary of
  156. the changes made to Python 1.6.1.
  157. 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
  158. basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
  159. IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
  160. DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
  161. FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
  162. INFRINGE ANY THIRD PARTY RIGHTS.
  163. 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
  164. 1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
  165. A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
  166. OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
  167. 6. This License Agreement will automatically terminate upon a material
  168. breach of its terms and conditions.
  169. 7. This License Agreement shall be governed by the federal
  170. intellectual property law of the United States, including without
  171. limitation the federal copyright law, and, to the extent such
  172. U.S. federal law does not apply, by the law of the Commonwealth of
  173. Virginia, excluding Virginia's conflict of law provisions.
  174. Notwithstanding the foregoing, with regard to derivative works based
  175. on Python 1.6.1 that incorporate non-separable material that was
  176. previously distributed under the GNU General Public License (GPL), the
  177. law of the Commonwealth of Virginia shall govern this License
  178. Agreement only as to issues arising under or with respect to
  179. Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
  180. License Agreement shall be deemed to create any relationship of
  181. agency, partnership, or joint venture between CNRI and Licensee. This
  182. License Agreement does not grant permission to use CNRI trademarks or
  183. trade name in a trademark sense to endorse or promote products or
  184. services of Licensee, or any third party.
  185. 8. By clicking on the "ACCEPT" button where indicated, or by copying,
  186. installing or otherwise using Python 1.6.1, Licensee agrees to be
  187. bound by the terms and conditions of this License Agreement.
  188. ACCEPT
  189. CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
  190. --------------------------------------------------
  191. Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
  192. The Netherlands. All rights reserved.
  193. Permission to use, copy, modify, and distribute this software and its
  194. documentation for any purpose and without fee is hereby granted,
  195. provided that the above copyright notice appear in all copies and that
  196. both that copyright notice and this permission notice appear in
  197. supporting documentation, and that the name of Stichting Mathematisch
  198. Centrum or CWI not be used in advertising or publicity pertaining to
  199. distribution of the software without specific, written prior
  200. permission.
  201. STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
  202. THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  203. FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
  204. FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  205. WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  206. ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  207. OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.