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<div class="section" id="history-and-license">
<span id="id1"></span><h1>History and License<a class="headerlink" href="#history-and-license" title="Permalink to this headline">¶</a></h1>
<div class="section" id="history-of-the-software">
<h2>History of the software<a class="headerlink" href="#history-of-the-software" title="Permalink to this headline">¶</a></h2>
<p>Python was created in the early 1990s by Guido van Rossum at Stichting
Mathematisch Centrum (CWI, see <a class="reference external" href="http://www.cwi.nl/">http://www.cwi.nl/</a>) in the Netherlands as a
successor of a language called ABC. Guido remains Python’s principal author,
although it includes many contributions from others.</p>
<p>In 1995, Guido continued his work on Python at the Corporation for National
Research Initiatives (CNRI, see <a class="reference external" href="http://www.cnri.reston.va.us/">http://www.cnri.reston.va.us/</a>) in Reston,
Virginia where he released several versions of the software.</p>
<p>In May 2000, Guido and the Python core development team moved to BeOpen.com to
form the BeOpen PythonLabs team. In October of the same year, the PythonLabs
team moved to Digital Creations (now Zope Corporation; see
<a class="reference external" href="http://www.zope.com/">http://www.zope.com/</a>). In 2001, the Python Software Foundation (PSF, see
<a class="reference external" href="http://www.python.org/psf/">http://www.python.org/psf/</a>) was formed, a non-profit organization created
specifically to own Python-related Intellectual Property. Zope Corporation is a
sponsoring member of the PSF.</p>
<p>All Python releases are Open Source (see <a class="reference external" href="http://www.opensource.org/">http://www.opensource.org/</a> for the Open
Source Definition). Historically, most, but not all, Python releases have also
been GPL-compatible; the table below summarizes the various releases.</p>
<table border="1" class="docutils">
<colgroup>
<col width="23%" />
<col width="20%" />
<col width="16%" />
<col width="17%" />
<col width="24%" />
</colgroup>
<thead valign="bottom">
<tr><th class="head">Release</th>
<th class="head">Derived from</th>
<th class="head">Year</th>
<th class="head">Owner</th>
<th class="head">GPL compatible?</th>
</tr>
</thead>
<tbody valign="top">
<tr><td>0.9.0 thru 1.2</td>
<td>n/a</td>
<td>1991-1995</td>
<td>CWI</td>
<td>yes</td>
</tr>
<tr><td>1.3 thru 1.5.2</td>
<td>1.2</td>
<td>1995-1999</td>
<td>CNRI</td>
<td>yes</td>
</tr>
<tr><td>1.6</td>
<td>1.5.2</td>
<td>2000</td>
<td>CNRI</td>
<td>no</td>
</tr>
<tr><td>2.0</td>
<td>1.6</td>
<td>2000</td>
<td>BeOpen.com</td>
<td>no</td>
</tr>
<tr><td>1.6.1</td>
<td>1.6</td>
<td>2001</td>
<td>CNRI</td>
<td>no</td>
</tr>
<tr><td>2.1</td>
<td>2.0+1.6.1</td>
<td>2001</td>
<td>PSF</td>
<td>no</td>
</tr>
<tr><td>2.0.1</td>
<td>2.0+1.6.1</td>
<td>2001</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.1.1</td>
<td>2.1+2.0.1</td>
<td>2001</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.2</td>
<td>2.1.1</td>
<td>2001</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.1.2</td>
<td>2.1.1</td>
<td>2002</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.1.3</td>
<td>2.1.2</td>
<td>2002</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.2.1</td>
<td>2.2</td>
<td>2002</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.2.2</td>
<td>2.2.1</td>
<td>2002</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.2.3</td>
<td>2.2.2</td>
<td>2002-2003</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.3</td>
<td>2.2.2</td>
<td>2002-2003</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.3.1</td>
<td>2.3</td>
<td>2002-2003</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.3.2</td>
<td>2.3.1</td>
<td>2003</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.3.3</td>
<td>2.3.2</td>
<td>2003</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.3.4</td>
<td>2.3.3</td>
<td>2004</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.3.5</td>
<td>2.3.4</td>
<td>2005</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.4</td>
<td>2.3</td>
<td>2004</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.4.1</td>
<td>2.4</td>
<td>2005</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.4.2</td>
<td>2.4.1</td>
<td>2005</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.4.3</td>
<td>2.4.2</td>
<td>2006</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.4.4</td>
<td>2.4.3</td>
<td>2006</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.5</td>
<td>2.4</td>
<td>2006</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.5.1</td>
<td>2.5</td>
<td>2007</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.5.2</td>
<td>2.5.1</td>
<td>2008</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.5.3</td>
<td>2.5.2</td>
<td>2008</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.6</td>
<td>2.5</td>
<td>2008</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.6.1</td>
<td>2.6</td>
<td>2008</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.6.2</td>
<td>2.6.1</td>
<td>2009</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.6.3</td>
<td>2.6.2</td>
<td>2009</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.6.4</td>
<td>2.6.3</td>
<td>2009</td>
<td>PSF</td>
<td>yes</td>
</tr>
<tr><td>2.6.5</td>
<td>2.6.4</td>
<td>2010</td>
<td>PSF</td>
<td>yes</td>
</tr>
</tbody>
</table>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">GPL-compatible doesn’t mean that we’re distributing Python under the GPL. All
Python licenses, unlike the GPL, let you distribute a modified version without
making your changes open source. The GPL-compatible licenses make it possible to
combine Python with other software that is released under the GPL; the others
don’t.</p>
</div>
<p>Thanks to the many outside volunteers who have worked under Guido’s direction to
make these releases possible.</p>
</div>
<div class="section" id="terms-and-conditions-for-accessing-or-otherwise-using-python">
<h2>Terms and conditions for accessing or otherwise using Python<a class="headerlink" href="#terms-and-conditions-for-accessing-or-otherwise-using-python" title="Permalink to this headline">¶</a></h2>
<p class="centered">
<strong>PSF LICENSE AGREEMENT FOR PYTHON 2.6.6</strong></p><ol class="arabic simple">
<li>This LICENSE AGREEMENT is between the Python Software Foundation (“PSF”), and
the Individual or Organization (“Licensee”) accessing and otherwise using Python
2.6.6 software in source or binary form and its associated documentation.</li>
<li>Subject to the terms and conditions of this License Agreement, PSF hereby
grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
analyze, test, perform and/or display publicly, prepare derivative works,
distribute, and otherwise use Python 2.6.6 alone or in any derivative
version, provided, however, that PSF’s License Agreement and PSF’s notice of
copyright, i.e., “Copyright © 2001-2010 Python Software Foundation; All Rights
Reserved” are retained in Python 2.6.6 alone or in any derivative version
prepared by Licensee.</li>
<li>In the event Licensee prepares a derivative work that is based on or
incorporates Python 2.6.6 or any part thereof, and wants to make the
derivative work available to others as provided herein, then Licensee hereby
agrees to include in any such work a brief summary of the changes made to Python
2.6.6.</li>
<li>PSF is making Python 2.6.6 available to Licensee on an “AS IS” basis.
PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF
EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND DISCLAIMS ANY REPRESENTATION OR
WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE
USE OF PYTHON 2.6.6 WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.</li>
<li>PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON 2.6.6
FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF
MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 2.6.6, OR ANY DERIVATIVE
THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.</li>
<li>This License Agreement will automatically terminate upon a material breach of
its terms and conditions.</li>
<li>Nothing in this License Agreement shall be deemed to create any relationship
of agency, partnership, or joint venture between PSF and Licensee. This License
Agreement does not grant permission to use PSF trademarks or trade name in a
trademark sense to endorse or promote products or services of Licensee, or any
third party.</li>
<li>By copying, installing or otherwise using Python 2.6.6, Licensee agrees
to be bound by the terms and conditions of this License Agreement.</li>
</ol>
<p class="centered">
<strong>BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0</strong></p><p class="centered">
<strong>BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1</strong></p><ol class="arabic simple">
<li>This LICENSE AGREEMENT is between BeOpen.com (“BeOpen”), having an office at
160 Saratoga Avenue, Santa Clara, CA 95051, and the Individual or Organization
(“Licensee”) accessing and otherwise using this software in source or binary
form and its associated documentation (“the Software”).</li>
<li>Subject to the terms and conditions of this BeOpen Python License Agreement,
BeOpen hereby grants Licensee a non-exclusive, royalty-free, world-wide license
to reproduce, analyze, test, perform and/or display publicly, prepare derivative
works, distribute, and otherwise use the Software alone or in any derivative
version, provided, however, that the BeOpen Python License is retained in the
Software, alone or in any derivative version prepared by Licensee.</li>
<li>BeOpen is making the Software available to Licensee on an “AS IS” basis.
BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF
EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND DISCLAIMS ANY REPRESENTATION OR
WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE
USE OF THE SOFTWARE WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.</li>
<li>BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE SOFTWARE FOR
ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF USING,
MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY DERIVATIVE THEREOF, EVEN IF
ADVISED OF THE POSSIBILITY THEREOF.</li>
<li>This License Agreement will automatically terminate upon a material breach of
its terms and conditions.</li>
<li>This License Agreement shall be governed by and interpreted in all respects
by the law of the State of California, excluding conflict of law provisions.
Nothing in this License Agreement shall be deemed to create any relationship of
agency, partnership, or joint venture between BeOpen and Licensee. This License
Agreement does not grant permission to use BeOpen trademarks or trade names in a
trademark sense to endorse or promote products or services of Licensee, or any
third party. As an exception, the “BeOpen Python” logos available at
<a class="reference external" href="http://www.pythonlabs.com/logos.html">http://www.pythonlabs.com/logos.html</a> may be used according to the permissions
granted on that web page.</li>
<li>By copying, installing or otherwise using the software, Licensee agrees to be
bound by the terms and conditions of this License Agreement.</li>
</ol>
<p class="centered">
<strong>CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1</strong></p><ol class="arabic simple">
<li>This LICENSE AGREEMENT is between the Corporation for National Research
Initiatives, having an office at 1895 Preston White Drive, Reston, VA 20191
(“CNRI”), and the Individual or Organization (“Licensee”) accessing and
otherwise using Python 1.6.1 software in source or binary form and its
associated documentation.</li>
<li>Subject to the terms and conditions of this License Agreement, CNRI hereby
grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
analyze, test, perform and/or display publicly, prepare derivative works,
distribute, and otherwise use Python 1.6.1 alone or in any derivative version,
provided, however, that CNRI’s License Agreement and CNRI’s notice of copyright,
i.e., “Copyright © 1995-2001 Corporation for National Research Initiatives; All
Rights Reserved” are retained in Python 1.6.1 alone or in any derivative version
prepared by Licensee. Alternately, in lieu of CNRI’s License Agreement,
Licensee may substitute the following text (omitting the quotes): “Python 1.6.1
is made available subject to the terms and conditions in CNRI’s License
Agreement. This Agreement together with Python 1.6.1 may be located on the
Internet using the following unique, persistent identifier (known as a handle):
1895.22/1013. This Agreement may also be obtained from a proxy server on the
Internet using the following URL: <a class="reference external" href="http://hdl.handle.net/1895.22/1013">http://hdl.handle.net/1895.22/1013</a>.”</li>
<li>In the event Licensee prepares a derivative work that is based on or
incorporates Python 1.6.1 or any part thereof, and wants to make the derivative
work available to others as provided herein, then Licensee hereby agrees to
include in any such work a brief summary of the changes made to Python 1.6.1.</li>
<li>CNRI is making Python 1.6.1 available to Licensee on an “AS IS” basis. CNRI
MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE,
BUT NOT LIMITATION, CNRI MAKES NO AND DISCLAIMS ANY REPRESENTATION OR WARRANTY
OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF
PYTHON 1.6.1 WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.</li>
<li>CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON 1.6.1 FOR
ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF
MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1, OR ANY DERIVATIVE
THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.</li>
<li>This License Agreement will automatically terminate upon a material breach of
its terms and conditions.</li>
<li>This License Agreement shall be governed by the federal intellectual property
law of the United States, including without limitation the federal copyright
law, and, to the extent such U.S. federal law does not apply, by the law of the
Commonwealth of Virginia, excluding Virginia’s conflict of law provisions.
Notwithstanding the foregoing, with regard to derivative works based on Python
1.6.1 that incorporate non-separable material that was previously distributed
under the GNU General Public License (GPL), the law of the Commonwealth of
Virginia shall govern this License Agreement only as to issues arising under or
with respect to Paragraphs 4, 5, and 7 of this License Agreement. Nothing in
this License Agreement shall be deemed to create any relationship of agency,
partnership, or joint venture between CNRI and Licensee. This License Agreement
does not grant permission to use CNRI trademarks or trade name in a trademark
sense to endorse or promote products or services of Licensee, or any third
party.</li>
<li>By clicking on the “ACCEPT” button where indicated, or by copying, installing
or otherwise using Python 1.6.1, Licensee agrees to be bound by the terms and
conditions of this License Agreement.</li>
</ol>
<p class="centered">
<strong>ACCEPT</strong></p><p class="centered">
<strong>CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2</strong></p><p>Copyright © 1991 - 1995, Stichting Mathematisch Centrum Amsterdam, The
Netherlands. All rights reserved.</p>
<p>Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted, provided that
the above copyright notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting documentation, and that
the name of Stichting Mathematisch Centrum or CWI not be used in advertising or
publicity pertaining to distribution of the software without specific, written
prior permission.</p>
<p>STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE FOR ANY SPECIAL, INDIRECT
OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.</p>
</div>
<div class="section" id="licenses-and-acknowledgements-for-incorporated-software">
<h2>Licenses and Acknowledgements for Incorporated Software<a class="headerlink" href="#licenses-and-acknowledgements-for-incorporated-software" title="Permalink to this headline">¶</a></h2>
<p>This section is an incomplete, but growing list of licenses and acknowledgements
for third-party software incorporated in the Python distribution.</p>
<div class="section" id="mersenne-twister">
<h3>Mersenne Twister<a class="headerlink" href="#mersenne-twister" title="Permalink to this headline">¶</a></h3>
<p>The <tt class="xref docutils literal"><span class="pre">_random</span></tt> module includes code based on a download from
<a class="reference external" href="http://www.math.keio.ac.jp/">http://www.math.keio.ac.jp/</a> matumoto/MT2002/emt19937ar.html. The following are
the verbatim comments from the original code:</p>
<div class="highlight-none"><div class="highlight"><pre>A C-program for MT19937, with initialization improved 2002/1/26.
Coded by Takuji Nishimura and Makoto Matsumoto.
Before using, initialize the state by using init_genrand(seed)
or init_by_array(init_key, key_length).
Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The names of its contributors may not be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Any feedback is very welcome.
http://www.math.keio.ac.jp/matumoto/emt.html
email: matumoto@math.keio.ac.jp
</pre></div>
</div>
</div>
<div class="section" id="sockets">
<h3>Sockets<a class="headerlink" href="#sockets" title="Permalink to this headline">¶</a></h3>
<p>The <a title="Low-level networking interface." class="reference external" href="library/socket.html#module-socket"><tt class="xref docutils literal"><span class="pre">socket</span></tt></a> module uses the functions, <tt class="xref docutils literal"><span class="pre">getaddrinfo()</span></tt>, and
<tt class="xref docutils literal"><span class="pre">getnameinfo()</span></tt>, which are coded in separate source files from the WIDE
Project, <a class="reference external" href="http://www.wide.ad.jp/">http://www.wide.ad.jp/</a>.</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the project nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
GAI_ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
FOR GAI_ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON GAI_ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN GAI_ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
</pre></div>
</div>
</div>
<div class="section" id="floating-point-exception-control">
<h3>Floating point exception control<a class="headerlink" href="#floating-point-exception-control" title="Permalink to this headline">¶</a></h3>
<p>The source for the <a title="(Unix) Provide control for floating point exception handling." class="reference external" href="library/fpectl.html#module-fpectl"><tt class="xref docutils literal"><span class="pre">fpectl</span></tt></a> module includes the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre> ---------------------------------------------------------------------
/ Copyright (c) 1996. \
| The Regents of the University of California. |
| All rights reserved. |
| |
| Permission to use, copy, modify, and distribute this software for |
| any purpose without fee is hereby granted, provided that this en- |
| tire notice is included in all copies of any software which is or |
| includes a copy or modification of this software and in all |
| copies of the supporting documentation for such software. |
| |
| This work was produced at the University of California, Lawrence |
| Livermore National Laboratory under contract no. W-7405-ENG-48 |
| between the U.S. Department of Energy and The Regents of the |
| University of California for the operation of UC LLNL. |
| |
| DISCLAIMER |
| |
| This software was prepared as an account of work sponsored by an |
| agency of the United States Government. Neither the United States |
| Government nor the University of California nor any of their em- |
| ployees, makes any warranty, express or implied, or assumes any |
| liability or responsibility for the accuracy, completeness, or |
| usefulness of any information, apparatus, product, or process |
| disclosed, or represents that its use would not infringe |
| privately-owned rights. Reference herein to any specific commer- |
| cial products, process, or service by trade name, trademark, |
| manufacturer, or otherwise, does not necessarily constitute or |
| imply its endorsement, recommendation, or favoring by the United |
| States Government or the University of California. The views and |
| opinions of authors expressed herein do not necessarily state or |
| reflect those of the United States Government or the University |
| of California, and shall not be used for advertising or product |
\ endorsement purposes. /
---------------------------------------------------------------------
</pre></div>
</div>
</div>
<div class="section" id="md5-message-digest-algorithm">
<h3>MD5 message digest algorithm<a class="headerlink" href="#md5-message-digest-algorithm" title="Permalink to this headline">¶</a></h3>
<p>The source code for the <a title="RSA's MD5 message digest algorithm. (deprecated)" class="reference external" href="library/md5.html#module-md5"><tt class="xref docutils literal"><span class="pre">md5</span></tt></a> module contains the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright (C) 1999, 2002 Aladdin Enterprises. All rights reserved.
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
L. Peter Deutsch
ghost@aladdin.com
Independent implementation of MD5 (RFC 1321).
This code implements the MD5 Algorithm defined in RFC 1321, whose
text is available at
http://www.ietf.org/rfc/rfc1321.txt
The code is derived from the text of the RFC, including the test suite
(section A.5) but excluding the rest of Appendix A. It does not include
any code or documentation that is identified in the RFC as being
copyrighted.
The original and principal author of md5.h is L. Peter Deutsch
<ghost@aladdin.com>. Other authors are noted in the change history
that follows (in reverse chronological order):
2002-04-13 lpd Removed support for non-ANSI compilers; removed
references to Ghostscript; clarified derivation from RFC 1321;
now handles byte order either statically or dynamically.
1999-11-04 lpd Edited comments slightly for automatic TOC extraction.
1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5);
added conditionalization for C++ compilation from Martin
Purschke <purschke@bnl.gov>.
1999-05-03 lpd Original version.
</pre></div>
</div>
</div>
<div class="section" id="asynchronous-socket-services">
<h3>Asynchronous socket services<a class="headerlink" href="#asynchronous-socket-services" title="Permalink to this headline">¶</a></h3>
<p>The <a title="Support for asynchronous command/response protocols." class="reference external" href="library/asynchat.html#module-asynchat"><tt class="xref docutils literal"><span class="pre">asynchat</span></tt></a> and <a title="A base class for developing asynchronous socket handling services." class="reference external" href="library/asyncore.html#module-asyncore"><tt class="xref docutils literal"><span class="pre">asyncore</span></tt></a> modules contain the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright 1996 by Sam Rushing
All Rights Reserved
Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that copyright notice and this permission
notice appear in supporting documentation, and that the name of Sam
Rushing not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
SAM RUSHING DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
NO EVENT SHALL SAM RUSHING BE LIABLE FOR ANY SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
</pre></div>
</div>
</div>
<div class="section" id="cookie-management">
<h3>Cookie management<a class="headerlink" href="#cookie-management" title="Permalink to this headline">¶</a></h3>
<p>The <a title="Support for HTTP state management (cookies)." class="reference external" href="library/cookie.html#module-Cookie"><tt class="xref docutils literal"><span class="pre">Cookie</span></tt></a> module contains the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright 2000 by Timothy O'Malley <timo@alum.mit.edu>
All Rights Reserved
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that copyright notice and this permission
notice appear in supporting documentation, and that the name of
Timothy O'Malley not be used in advertising or publicity
pertaining to distribution of the software without specific, written
prior permission.
Timothy O'Malley DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS, IN NO EVENT SHALL Timothy O'Malley BE LIABLE FOR
ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
</pre></div>
</div>
</div>
<div class="section" id="profiling">
<h3>Profiling<a class="headerlink" href="#profiling" title="Permalink to this headline">¶</a></h3>
<p>The <a title="Python source profiler." class="reference external" href="library/profile.html#module-profile"><tt class="xref docutils literal"><span class="pre">profile</span></tt></a> and <a title="Statistics object for use with the profiler." class="reference external" href="library/profile.html#module-pstats"><tt class="xref docutils literal"><span class="pre">pstats</span></tt></a> modules contain the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright 1994, by InfoSeek Corporation, all rights reserved.
Written by James Roskind
Permission to use, copy, modify, and distribute this Python software
and its associated documentation for any purpose (subject to the
restriction in the following sentence) without fee is hereby granted,
provided that the above copyright notice appears in all copies, and
that both that copyright notice and this permission notice appear in
supporting documentation, and that the name of InfoSeek not be used in
advertising or publicity pertaining to distribution of the software
without specific, written prior permission. This permission is
explicitly restricted to the copying and modification of the software
to remain in Python, compiled Python, or other languages (such as C)
wherein the modified or derived code is exclusively imported into a
Python module.
INFOSEEK CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS. IN NO EVENT SHALL INFOSEEK CORPORATION BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
</pre></div>
</div>
</div>
<div class="section" id="execution-tracing">
<h3>Execution tracing<a class="headerlink" href="#execution-tracing" title="Permalink to this headline">¶</a></h3>
<p>The <a title="Trace or track Python statement execution." class="reference external" href="library/trace.html#module-trace"><tt class="xref docutils literal"><span class="pre">trace</span></tt></a> module contains the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre>portions copyright 2001, Autonomous Zones Industries, Inc., all rights...
err... reserved and offered to the public under the terms of the
Python 2.2 license.
Author: Zooko O'Whielacronx
http://zooko.com/
mailto:zooko@zooko.com
Copyright 2000, Mojam Media, Inc., all rights reserved.
Author: Skip Montanaro
Copyright 1999, Bioreason, Inc., all rights reserved.
Author: Andrew Dalke
Copyright 1995-1997, Automatrix, Inc., all rights reserved.
Author: Skip Montanaro
Copyright 1991-1995, Stichting Mathematisch Centrum, all rights reserved.
Permission to use, copy, modify, and distribute this Python software and
its associated documentation for any purpose without fee is hereby
granted, provided that the above copyright notice appears in all copies,
and that both that copyright notice and this permission notice appear in
supporting documentation, and that the name of neither Automatrix,
Bioreason or Mojam Media be used in advertising or publicity pertaining to
distribution of the software without specific, written prior permission.
</pre></div>
</div>
</div>
<div class="section" id="uuencode-and-uudecode-functions">
<h3>UUencode and UUdecode functions<a class="headerlink" href="#uuencode-and-uudecode-functions" title="Permalink to this headline">¶</a></h3>
<p>The <a title="Encode and decode files in uuencode format." class="reference external" href="library/uu.html#module-uu"><tt class="xref docutils literal"><span class="pre">uu</span></tt></a> module contains the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright 1994 by Lance Ellinghouse
Cathedral City, California Republic, United States of America.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Lance Ellinghouse
not be used in advertising or publicity pertaining to distribution
of the software without specific, written prior permission.
LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Modified by Jack Jansen, CWI, July 1995:
- Use binascii module to do the actual line-by-line conversion
between ascii and binary. This results in a 1000-fold speedup. The C
version is still 5 times faster, though.
- Arguments more compliant with Python standard
</pre></div>
</div>
</div>
<div class="section" id="xml-remote-procedure-calls">
<h3>XML Remote Procedure Calls<a class="headerlink" href="#xml-remote-procedure-calls" title="Permalink to this headline">¶</a></h3>
<p>The <a title="XML-RPC client access." class="reference external" href="library/xmlrpclib.html#module-xmlrpclib"><tt class="xref docutils literal"><span class="pre">xmlrpclib</span></tt></a> module contains the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre> The XML-RPC client interface is
Copyright (c) 1999-2002 by Secret Labs AB
Copyright (c) 1999-2002 by Fredrik Lundh
By obtaining, using, and/or copying this software and/or its
associated documentation, you agree that you have read, understood,
and will comply with the following terms and conditions:
Permission to use, copy, modify, and distribute this software and
its associated documentation for any purpose and without fee is
hereby granted, provided that the above copyright notice appears in
all copies, and that both that copyright notice and this permission
notice appear in supporting documentation, and that the name of
Secret Labs AB or the author not be used in advertising or publicity
pertaining to distribution of the software without specific, written
prior permission.
SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
OF THIS SOFTWARE.
</pre></div>
</div>
</div>
<div class="section" id="test-epoll">
<h3>test_epoll<a class="headerlink" href="#test-epoll" title="Permalink to this headline">¶</a></h3>
<p>The <tt class="xref docutils literal"><span class="pre">test_epoll</span></tt> contains the following notice:</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright (c) 2001-2006 Twisted Matrix Laboratories.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
</pre></div>
</div>
</div>
<div class="section" id="select-kqueue">
<h3>Select kqueue<a class="headerlink" href="#select-kqueue" title="Permalink to this headline">¶</a></h3>
<p>The <a title="Wait for I/O completion on multiple streams." class="reference external" href="library/select.html#module-select"><tt class="xref docutils literal"><span class="pre">select</span></tt></a> and contains the following notice for the kqueue interface:</p>
<div class="highlight-none"><div class="highlight"><pre>Copyright (c) 2000 Doug White, 2006 James Knight, 2007 Christian Heimes
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
</pre></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="sphinxsidebar">
<div class="sphinxsidebarwrapper">
<h3><a href="contents.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference external" href="#">History and License</a><ul>
<li><a class="reference external" href="#history-of-the-software">History of the software</a></li>
<li><a class="reference external" href="#terms-and-conditions-for-accessing-or-otherwise-using-python">Terms and conditions for accessing or otherwise using Python</a></li>
<li><a class="reference external" href="#licenses-and-acknowledgements-for-incorporated-software">Licenses and Acknowledgements for Incorporated Software</a><ul>
<li><a class="reference external" href="#mersenne-twister">Mersenne Twister</a></li>
<li><a class="reference external" href="#sockets">Sockets</a></li>
<li><a class="reference external" href="#floating-point-exception-control">Floating point exception control</a></li>
<li><a class="reference external" href="#md5-message-digest-algorithm">MD5 message digest algorithm</a></li>
<li><a class="reference external" href="#asynchronous-socket-services">Asynchronous socket services</a></li>
<li><a class="reference external" href="#cookie-management">Cookie management</a></li>
<li><a class="reference external" href="#profiling">Profiling</a></li>
<li><a class="reference external" href="#execution-tracing">Execution tracing</a></li>
<li><a class="reference external" href="#uuencode-and-uudecode-functions">UUencode and UUdecode functions</a></li>
<li><a class="reference external" href="#xml-remote-procedure-calls">XML Remote Procedure Calls</a></li>
<li><a class="reference external" href="#test-epoll">test_epoll</a></li>
<li><a class="reference external" href="#select-kqueue">Select kqueue</a></li>
</ul>
</li>
</ul>
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