1.. highlightlang:: none 2 3.. _history-and-license: 4 5******************* 6History and License 7******************* 8 9 10History of the software 11======================= 12 13Python was created in the early 1990s by Guido van Rossum at Stichting 14Mathematisch Centrum (CWI, see https://www.cwi.nl/) in the Netherlands as a 15successor of a language called ABC. Guido remains Python's principal author, 16although it includes many contributions from others. 17 18In 1995, Guido continued his work on Python at the Corporation for National 19Research Initiatives (CNRI, see https://www.cnri.reston.va.us/) in Reston, 20Virginia where he released several versions of the software. 21 22In May 2000, Guido and the Python core development team moved to BeOpen.com to 23form the BeOpen PythonLabs team. In October of the same year, the PythonLabs 24team moved to Digital Creations (now Zope Corporation; see 25http://www.zope.com/). In 2001, the Python Software Foundation (PSF, see 26https://www.python.org/psf/) was formed, a non-profit organization created 27specifically to own Python-related Intellectual Property. Zope Corporation is a 28sponsoring member of the PSF. 29 30All Python releases are Open Source (see https://opensource.org/ for the Open 31Source Definition). Historically, most, but not all, Python releases have also 32been GPL-compatible; the table below summarizes the various releases. 33 34+----------------+--------------+------------+------------+-----------------+ 35| Release | Derived from | Year | Owner | GPL compatible? | 36+================+==============+============+============+=================+ 37| 0.9.0 thru 1.2 | n/a | 1991-1995 | CWI | yes | 38+----------------+--------------+------------+------------+-----------------+ 39| 1.3 thru 1.5.2 | 1.2 | 1995-1999 | CNRI | yes | 40+----------------+--------------+------------+------------+-----------------+ 41| 1.6 | 1.5.2 | 2000 | CNRI | no | 42+----------------+--------------+------------+------------+-----------------+ 43| 2.0 | 1.6 | 2000 | BeOpen.com | no | 44+----------------+--------------+------------+------------+-----------------+ 45| 1.6.1 | 1.6 | 2001 | CNRI | no | 46+----------------+--------------+------------+------------+-----------------+ 47| 2.1 | 2.0+1.6.1 | 2001 | PSF | no | 48+----------------+--------------+------------+------------+-----------------+ 49| 2.0.1 | 2.0+1.6.1 | 2001 | PSF | yes | 50+----------------+--------------+------------+------------+-----------------+ 51| 2.1.1 | 2.1+2.0.1 | 2001 | PSF | yes | 52+----------------+--------------+------------+------------+-----------------+ 53| 2.1.2 | 2.1.1 | 2002 | PSF | yes | 54+----------------+--------------+------------+------------+-----------------+ 55| 2.1.3 | 2.1.2 | 2002 | PSF | yes | 56+----------------+--------------+------------+------------+-----------------+ 57| 2.2 and above | 2.1.1 | 2001-now | PSF | yes | 58+----------------+--------------+------------+------------+-----------------+ 59 60.. note:: 61 62 GPL-compatible doesn't mean that we're distributing Python under the GPL. All 63 Python licenses, unlike the GPL, let you distribute a modified version without 64 making your changes open source. The GPL-compatible licenses make it possible to 65 combine Python with other software that is released under the GPL; the others 66 don't. 67 68Thanks to the many outside volunteers who have worked under Guido's direction to 69make these releases possible. 70 71 72Terms and conditions for accessing or otherwise using Python 73============================================================ 74 75 76PSF LICENSE AGREEMENT FOR PYTHON |release| 77------------------------------------------ 78 79.. parsed-literal:: 80 81 1. This LICENSE AGREEMENT is between the Python Software Foundation ("PSF"), and 82 the Individual or Organization ("Licensee") accessing and otherwise using Python 83 |release| software in source or binary form and its associated documentation. 84 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 |release| alone or in any derivative 89 version, provided, however, that PSF's License Agreement and PSF's notice of 90 copyright, i.e., "Copyright © 2001-2017 Python Software Foundation; All Rights 91 Reserved" are retained in Python |release| alone or in any derivative version 92 prepared by Licensee. 93 94 3. In the event Licensee prepares a derivative work that is based on or 95 incorporates Python |release| or any part thereof, and wants to make the 96 derivative work available to others as provided herein, then Licensee hereby 97 agrees to include in any such work a brief summary of the changes made to Python 98 |release|. 99 100 4. PSF is making Python |release| available to Licensee on an "AS IS" basis. 101 PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF 102 EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND DISCLAIMS ANY REPRESENTATION OR 103 WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE 104 USE OF PYTHON |release| WILL NOT INFRINGE ANY THIRD PARTY RIGHTS. 105 106 5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON |release| 107 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF 108 MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON |release|, OR ANY DERIVATIVE 109 THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. 110 111 6. This License Agreement will automatically terminate upon a material breach of 112 its terms and conditions. 113 114 7. Nothing in this License Agreement shall be deemed to create any relationship 115 of agency, partnership, or joint venture between PSF and Licensee. This License 116 Agreement does not grant permission to use PSF trademarks or trade name in a 117 trademark sense to endorse or promote products or services of Licensee, or any 118 third party. 119 120 8. By copying, installing or otherwise using Python |release|, Licensee agrees 121 to be bound by the terms and conditions of this License Agreement. 122 123 124BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0 125------------------------------------------- 126 127BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1 128 129.. parsed-literal:: 130 131 1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an office at 132 160 Saratoga Avenue, Santa Clara, CA 95051, and the Individual or Organization 133 ("Licensee") accessing and otherwise using this software in source or binary 134 form and its associated documentation ("the Software"). 135 136 2. Subject to the terms and conditions of this BeOpen Python License Agreement, 137 BeOpen hereby grants Licensee a non-exclusive, royalty-free, world-wide license 138 to reproduce, analyze, test, perform and/or display publicly, prepare derivative 139 works, distribute, and otherwise use the Software alone or in any derivative 140 version, provided, however, that the BeOpen Python License is retained in the 141 Software, alone or in any derivative version prepared by Licensee. 142 143 3. BeOpen is making the Software available to Licensee on an "AS IS" basis. 144 BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF 145 EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND DISCLAIMS ANY REPRESENTATION OR 146 WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE 147 USE OF THE SOFTWARE WILL NOT INFRINGE ANY THIRD PARTY RIGHTS. 148 149 4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE SOFTWARE FOR 150 ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF USING, 151 MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY DERIVATIVE THEREOF, EVEN IF 152 ADVISED OF THE POSSIBILITY THEREOF. 153 154 5. This License Agreement will automatically terminate upon a material breach of 155 its terms and conditions. 156 157 6. This License Agreement shall be governed by and interpreted in all respects 158 by the law of the State of California, excluding conflict of law provisions. 159 Nothing in this License Agreement shall be deemed to create any relationship of 160 agency, partnership, or joint venture between BeOpen and Licensee. This License 161 Agreement does not grant permission to use BeOpen trademarks or trade names in a 162 trademark sense to endorse or promote products or services of Licensee, or any 163 third party. As an exception, the "BeOpen Python" logos available at 164 http://www.pythonlabs.com/logos.html may be used according to the permissions 165 granted on that web page. 166 167 7. By copying, installing or otherwise using the software, Licensee agrees to be 168 bound by the terms and conditions of this License Agreement. 169 170 171CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1 172--------------------------------------- 173 174.. parsed-literal:: 175 176 1. This LICENSE AGREEMENT is between the Corporation for National Research 177 Initiatives, having an office at 1895 Preston White Drive, Reston, VA 20191 178 ("CNRI"), and the Individual or Organization ("Licensee") accessing and 179 otherwise using Python 1.6.1 software in source or binary form and its 180 associated documentation. 181 182 2. Subject to the terms and conditions of this License Agreement, CNRI hereby 183 grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce, 184 analyze, test, perform and/or display publicly, prepare derivative works, 185 distribute, and otherwise use Python 1.6.1 alone or in any derivative version, 186 provided, however, that CNRI's License Agreement and CNRI's notice of copyright, 187 i.e., "Copyright © 1995-2001 Corporation for National Research Initiatives; All 188 Rights Reserved" are retained in Python 1.6.1 alone or in any derivative version 189 prepared by Licensee. Alternately, in lieu of CNRI's License Agreement, 190 Licensee may substitute the following text (omitting the quotes): "Python 1.6.1 191 is made available subject to the terms and conditions in CNRI's License 192 Agreement. This Agreement together with Python 1.6.1 may be located on the 193 Internet using the following unique, persistent identifier (known as a handle): 194 1895.22/1013. This Agreement may also be obtained from a proxy server on the 195 Internet using the following URL: http://hdl.handle.net/1895.22/1013." 196 197 3. In the event Licensee prepares a derivative work that is based on or 198 incorporates Python 1.6.1 or any part thereof, and wants to make the derivative 199 work available to others as provided herein, then Licensee hereby agrees to 200 include in any such work a brief summary of the changes made to Python 1.6.1. 201 202 4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS" basis. CNRI 203 MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE, 204 BUT NOT LIMITATION, CNRI MAKES NO AND DISCLAIMS ANY REPRESENTATION OR WARRANTY 205 OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF 206 PYTHON 1.6.1 WILL NOT INFRINGE ANY THIRD PARTY RIGHTS. 207 208 5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON 1.6.1 FOR 209 ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF 210 MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1, OR ANY DERIVATIVE 211 THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF. 212 213 6. This License Agreement will automatically terminate upon a material breach of 214 its terms and conditions. 215 216 7. This License Agreement shall be governed by the federal intellectual property 217 law of the United States, including without limitation the federal copyright 218 law, and, to the extent such U.S. federal law does not apply, by the law of the 219 Commonwealth of Virginia, excluding Virginia's conflict of law provisions. 220 Notwithstanding the foregoing, with regard to derivative works based on Python 221 1.6.1 that incorporate non-separable material that was previously distributed 222 under the GNU General Public License (GPL), the law of the Commonwealth of 223 Virginia shall govern this License Agreement only as to issues arising under or 224 with respect to Paragraphs 4, 5, and 7 of this License Agreement. Nothing in 225 this License Agreement shall be deemed to create any relationship of agency, 226 partnership, or joint venture between CNRI and Licensee. This License Agreement 227 does not grant permission to use CNRI trademarks or trade name in a trademark 228 sense to endorse or promote products or services of Licensee, or any third 229 party. 230 231 8. By clicking on the "ACCEPT" button where indicated, or by copying, installing 232 or otherwise using Python 1.6.1, Licensee agrees to be bound by the terms and 233 conditions of this License Agreement. 234 235 236CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2 237-------------------------------------------------- 238 239.. parsed-literal:: 240 241 Copyright © 1991 - 1995, Stichting Mathematisch Centrum Amsterdam, The 242 Netherlands. All rights reserved. 243 244 Permission to use, copy, modify, and distribute this software and its 245 documentation for any purpose and without fee is hereby granted, provided that 246 the above copyright notice appear in all copies and that both that copyright 247 notice and this permission notice appear in supporting documentation, and that 248 the name of Stichting Mathematisch Centrum or CWI not be used in advertising or 249 publicity pertaining to distribution of the software without specific, written 250 prior permission. 251 252 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 253 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 254 EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE FOR ANY SPECIAL, INDIRECT 255 OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 256 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 257 ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 258 SOFTWARE. 259 260 261Licenses and Acknowledgements for Incorporated Software 262======================================================= 263 264This section is an incomplete, but growing list of licenses and acknowledgements 265for third-party software incorporated in the Python distribution. 266 267 268Mersenne Twister 269---------------- 270 271The :mod:`_random` module includes code based on a download from 272http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/MT2002/emt19937ar.html. The following are 273the verbatim comments from the original code:: 274 275 A C-program for MT19937, with initialization improved 2002/1/26. 276 Coded by Takuji Nishimura and Makoto Matsumoto. 277 278 Before using, initialize the state by using init_genrand(seed) 279 or init_by_array(init_key, key_length). 280 281 Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, 282 All rights reserved. 283 284 Redistribution and use in source and binary forms, with or without 285 modification, are permitted provided that the following conditions 286 are met: 287 288 1. Redistributions of source code must retain the above copyright 289 notice, this list of conditions and the following disclaimer. 290 291 2. Redistributions in binary form must reproduce the above copyright 292 notice, this list of conditions and the following disclaimer in the 293 documentation and/or other materials provided with the distribution. 294 295 3. The names of its contributors may not be used to endorse or promote 296 products derived from this software without specific prior written 297 permission. 298 299 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 300 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 301 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 302 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 303 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 304 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 305 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 306 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 307 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 308 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 309 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 310 311 312 Any feedback is very welcome. 313 http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html 314 email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space) 315 316 317Sockets 318------- 319 320The :mod:`socket` module uses the functions, :func:`getaddrinfo`, and 321:func:`getnameinfo`, which are coded in separate source files from the WIDE 322Project, http://www.wide.ad.jp/. :: 323 324 Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 325 All rights reserved. 326 327 Redistribution and use in source and binary forms, with or without 328 modification, are permitted provided that the following conditions 329 are met: 330 1. Redistributions of source code must retain the above copyright 331 notice, this list of conditions and the following disclaimer. 332 2. Redistributions in binary form must reproduce the above copyright 333 notice, this list of conditions and the following disclaimer in the 334 documentation and/or other materials provided with the distribution. 335 3. Neither the name of the project nor the names of its contributors 336 may be used to endorse or promote products derived from this software 337 without specific prior written permission. 338 339 THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 340 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 341 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 342 ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 343 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 344 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 345 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 346 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 347 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 348 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 349 SUCH DAMAGE. 350 351 352Floating point exception control 353-------------------------------- 354 355The source for the :mod:`fpectl` module includes the following notice:: 356 357 --------------------------------------------------------------------- 358 / Copyright (c) 1996. \ 359 | The Regents of the University of California. | 360 | All rights reserved. | 361 | | 362 | Permission to use, copy, modify, and distribute this software for | 363 | any purpose without fee is hereby granted, provided that this en- | 364 | tire notice is included in all copies of any software which is or | 365 | includes a copy or modification of this software and in all | 366 | copies of the supporting documentation for such software. | 367 | | 368 | This work was produced at the University of California, Lawrence | 369 | Livermore National Laboratory under contract no. W-7405-ENG-48 | 370 | between the U.S. Department of Energy and The Regents of the | 371 | University of California for the operation of UC LLNL. | 372 | | 373 | DISCLAIMER | 374 | | 375 | This software was prepared as an account of work sponsored by an | 376 | agency of the United States Government. Neither the United States | 377 | Government nor the University of California nor any of their em- | 378 | ployees, makes any warranty, express or implied, or assumes any | 379 | liability or responsibility for the accuracy, completeness, or | 380 | usefulness of any information, apparatus, product, or process | 381 | disclosed, or represents that its use would not infringe | 382 | privately-owned rights. Reference herein to any specific commer- | 383 | cial products, process, or service by trade name, trademark, | 384 | manufacturer, or otherwise, does not necessarily constitute or | 385 | imply its endorsement, recommendation, or favoring by the United | 386 | States Government or the University of California. The views and | 387 | opinions of authors expressed herein do not necessarily state or | 388 | reflect those of the United States Government or the University | 389 | of California, and shall not be used for advertising or product | 390 \ endorsement purposes. / 391 --------------------------------------------------------------------- 392 393 394Asynchronous socket services 395---------------------------- 396 397The :mod:`asynchat` and :mod:`asyncore` modules contain the following notice:: 398 399 Copyright 1996 by Sam Rushing 400 401 All Rights Reserved 402 403 Permission to use, copy, modify, and distribute this software and 404 its documentation for any purpose and without fee is hereby 405 granted, provided that the above copyright notice appear in all 406 copies and that both that copyright notice and this permission 407 notice appear in supporting documentation, and that the name of Sam 408 Rushing not be used in advertising or publicity pertaining to 409 distribution of the software without specific, written prior 410 permission. 411 412 SAM RUSHING DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 413 INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN 414 NO EVENT SHALL SAM RUSHING BE LIABLE FOR ANY SPECIAL, INDIRECT OR 415 CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS 416 OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, 417 NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 418 CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 419 420 421Cookie management 422----------------- 423 424The :mod:`http.cookies` module contains the following notice:: 425 426 Copyright 2000 by Timothy O'Malley <timo@alum.mit.edu> 427 428 All Rights Reserved 429 430 Permission to use, copy, modify, and distribute this software 431 and its documentation for any purpose and without fee is hereby 432 granted, provided that the above copyright notice appear in all 433 copies and that both that copyright notice and this permission 434 notice appear in supporting documentation, and that the name of 435 Timothy O'Malley not be used in advertising or publicity 436 pertaining to distribution of the software without specific, written 437 prior permission. 438 439 Timothy O'Malley DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 440 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 441 AND FITNESS, IN NO EVENT SHALL Timothy O'Malley BE LIABLE FOR 442 ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 443 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 444 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 445 ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 446 PERFORMANCE OF THIS SOFTWARE. 447 448 449Execution tracing 450----------------- 451 452The :mod:`trace` module contains the following notice:: 453 454 portions copyright 2001, Autonomous Zones Industries, Inc., all rights... 455 err... reserved and offered to the public under the terms of the 456 Python 2.2 license. 457 Author: Zooko O'Whielacronx 458 http://zooko.com/ 459 mailto:zooko@zooko.com 460 461 Copyright 2000, Mojam Media, Inc., all rights reserved. 462 Author: Skip Montanaro 463 464 Copyright 1999, Bioreason, Inc., all rights reserved. 465 Author: Andrew Dalke 466 467 Copyright 1995-1997, Automatrix, Inc., all rights reserved. 468 Author: Skip Montanaro 469 470 Copyright 1991-1995, Stichting Mathematisch Centrum, all rights reserved. 471 472 473 Permission to use, copy, modify, and distribute this Python software and 474 its associated documentation for any purpose without fee is hereby 475 granted, provided that the above copyright notice appears in all copies, 476 and that both that copyright notice and this permission notice appear in 477 supporting documentation, and that the name of neither Automatrix, 478 Bioreason or Mojam Media be used in advertising or publicity pertaining to 479 distribution of the software without specific, written prior permission. 480 481 482UUencode and UUdecode functions 483------------------------------- 484 485The :mod:`uu` module contains the following notice:: 486 487 Copyright 1994 by Lance Ellinghouse 488 Cathedral City, California Republic, United States of America. 489 All Rights Reserved 490 Permission to use, copy, modify, and distribute this software and its 491 documentation for any purpose and without fee is hereby granted, 492 provided that the above copyright notice appear in all copies and that 493 both that copyright notice and this permission notice appear in 494 supporting documentation, and that the name of Lance Ellinghouse 495 not be used in advertising or publicity pertaining to distribution 496 of the software without specific, written prior permission. 497 LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO 498 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND 499 FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE 500 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 501 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 502 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 503 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 504 505 Modified by Jack Jansen, CWI, July 1995: 506 - Use binascii module to do the actual line-by-line conversion 507 between ascii and binary. This results in a 1000-fold speedup. The C 508 version is still 5 times faster, though. 509 - Arguments more compliant with Python standard 510 511 512XML Remote Procedure Calls 513-------------------------- 514 515The :mod:`xmlrpc.client` module contains the following notice:: 516 517 The XML-RPC client interface is 518 519 Copyright (c) 1999-2002 by Secret Labs AB 520 Copyright (c) 1999-2002 by Fredrik Lundh 521 522 By obtaining, using, and/or copying this software and/or its 523 associated documentation, you agree that you have read, understood, 524 and will comply with the following terms and conditions: 525 526 Permission to use, copy, modify, and distribute this software and 527 its associated documentation for any purpose and without fee is 528 hereby granted, provided that the above copyright notice appears in 529 all copies, and that both that copyright notice and this permission 530 notice appear in supporting documentation, and that the name of 531 Secret Labs AB or the author not be used in advertising or publicity 532 pertaining to distribution of the software without specific, written 533 prior permission. 534 535 SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD 536 TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT- 537 ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR 538 BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY 539 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 540 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 541 ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 542 OF THIS SOFTWARE. 543 544 545test_epoll 546---------- 547 548The :mod:`test_epoll` contains the following notice:: 549 550 Copyright (c) 2001-2006 Twisted Matrix Laboratories. 551 552 Permission is hereby granted, free of charge, to any person obtaining 553 a copy of this software and associated documentation files (the 554 "Software"), to deal in the Software without restriction, including 555 without limitation the rights to use, copy, modify, merge, publish, 556 distribute, sublicense, and/or sell copies of the Software, and to 557 permit persons to whom the Software is furnished to do so, subject to 558 the following conditions: 559 560 The above copyright notice and this permission notice shall be 561 included in all copies or substantial portions of the Software. 562 563 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 564 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 565 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 566 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 567 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 568 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 569 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 570 571Select kqueue 572------------- 573 574The :mod:`select` and contains the following notice for the kqueue interface:: 575 576 Copyright (c) 2000 Doug White, 2006 James Knight, 2007 Christian Heimes 577 All rights reserved. 578 579 Redistribution and use in source and binary forms, with or without 580 modification, are permitted provided that the following conditions 581 are met: 582 1. Redistributions of source code must retain the above copyright 583 notice, this list of conditions and the following disclaimer. 584 2. Redistributions in binary form must reproduce the above copyright 585 notice, this list of conditions and the following disclaimer in the 586 documentation and/or other materials provided with the distribution. 587 588 THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 589 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 590 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 591 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 592 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 593 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 594 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 595 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 596 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 597 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 598 SUCH DAMAGE. 599 600 601SipHash24 602--------- 603 604The file :file:`Python/pyhash.c` contains Marek Majkowski' implementation of 605Dan Bernstein's SipHash24 algorithm. The contains the following note:: 606 607 <MIT License> 608 Copyright (c) 2013 Marek Majkowski <marek@popcount.org> 609 610 Permission is hereby granted, free of charge, to any person obtaining a copy 611 of this software and associated documentation files (the "Software"), to deal 612 in the Software without restriction, including without limitation the rights 613 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 614 copies of the Software, and to permit persons to whom the Software is 615 furnished to do so, subject to the following conditions: 616 617 The above copyright notice and this permission notice shall be included in 618 all copies or substantial portions of the Software. 619 </MIT License> 620 621 Original location: 622 https://github.com/majek/csiphash/ 623 624 Solution inspired by code from: 625 Samuel Neves (supercop/crypto_auth/siphash24/little) 626 djb (supercop/crypto_auth/siphash24/little2) 627 Jean-Philippe Aumasson (https://131002.net/siphash/siphash24.c) 628 629 630strtod and dtoa 631--------------- 632 633The file :file:`Python/dtoa.c`, which supplies C functions dtoa and 634strtod for conversion of C doubles to and from strings, is derived 635from the file of the same name by David M. Gay, currently available 636from http://www.netlib.org/fp/. The original file, as retrieved on 637March 16, 2009, contains the following copyright and licensing 638notice:: 639 640 /**************************************************************** 641 * 642 * The author of this software is David M. Gay. 643 * 644 * Copyright (c) 1991, 2000, 2001 by Lucent Technologies. 645 * 646 * Permission to use, copy, modify, and distribute this software for any 647 * purpose without fee is hereby granted, provided that this entire notice 648 * is included in all copies of any software which is or includes a copy 649 * or modification of this software and in all copies of the supporting 650 * documentation for such software. 651 * 652 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED 653 * WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR LUCENT MAKES ANY 654 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY 655 * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. 656 * 657 ***************************************************************/ 658 659 660OpenSSL 661------- 662 663The modules :mod:`hashlib`, :mod:`posix`, :mod:`ssl`, :mod:`crypt` use 664the OpenSSL library for added performance if made available by the 665operating system. Additionally, the Windows and Mac OS X installers for 666Python may include a copy of the OpenSSL libraries, so we include a copy 667of the OpenSSL license here:: 668 669 670 LICENSE ISSUES 671 ============== 672 673 The OpenSSL toolkit stays under a dual license, i.e. both the conditions of 674 the OpenSSL License and the original SSLeay license apply to the toolkit. 675 See below for the actual license texts. Actually both licenses are BSD-style 676 Open Source licenses. In case of any license issues related to OpenSSL 677 please contact openssl-core@openssl.org. 678 679 OpenSSL License 680 --------------- 681 682 /* ==================================================================== 683 * Copyright (c) 1998-2008 The OpenSSL Project. All rights reserved. 684 * 685 * Redistribution and use in source and binary forms, with or without 686 * modification, are permitted provided that the following conditions 687 * are met: 688 * 689 * 1. Redistributions of source code must retain the above copyright 690 * notice, this list of conditions and the following disclaimer. 691 * 692 * 2. Redistributions in binary form must reproduce the above copyright 693 * notice, this list of conditions and the following disclaimer in 694 * the documentation and/or other materials provided with the 695 * distribution. 696 * 697 * 3. All advertising materials mentioning features or use of this 698 * software must display the following acknowledgment: 699 * "This product includes software developed by the OpenSSL Project 700 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 701 * 702 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 703 * endorse or promote products derived from this software without 704 * prior written permission. For written permission, please contact 705 * openssl-core@openssl.org. 706 * 707 * 5. Products derived from this software may not be called "OpenSSL" 708 * nor may "OpenSSL" appear in their names without prior written 709 * permission of the OpenSSL Project. 710 * 711 * 6. Redistributions of any form whatsoever must retain the following 712 * acknowledgment: 713 * "This product includes software developed by the OpenSSL Project 714 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 715 * 716 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 717 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 718 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 719 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 720 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 721 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 722 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 723 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 724 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 725 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 726 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 727 * OF THE POSSIBILITY OF SUCH DAMAGE. 728 * ==================================================================== 729 * 730 * This product includes cryptographic software written by Eric Young 731 * (eay@cryptsoft.com). This product includes software written by Tim 732 * Hudson (tjh@cryptsoft.com). 733 * 734 */ 735 736 Original SSLeay License 737 ----------------------- 738 739 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 740 * All rights reserved. 741 * 742 * This package is an SSL implementation written 743 * by Eric Young (eay@cryptsoft.com). 744 * The implementation was written so as to conform with Netscapes SSL. 745 * 746 * This library is free for commercial and non-commercial use as long as 747 * the following conditions are aheared to. The following conditions 748 * apply to all code found in this distribution, be it the RC4, RSA, 749 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 750 * included with this distribution is covered by the same copyright terms 751 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 752 * 753 * Copyright remains Eric Young's, and as such any Copyright notices in 754 * the code are not to be removed. 755 * If this package is used in a product, Eric Young should be given attribution 756 * as the author of the parts of the library used. 757 * This can be in the form of a textual message at program startup or 758 * in documentation (online or textual) provided with the package. 759 * 760 * Redistribution and use in source and binary forms, with or without 761 * modification, are permitted provided that the following conditions 762 * are met: 763 * 1. Redistributions of source code must retain the copyright 764 * notice, this list of conditions and the following disclaimer. 765 * 2. Redistributions in binary form must reproduce the above copyright 766 * notice, this list of conditions and the following disclaimer in the 767 * documentation and/or other materials provided with the distribution. 768 * 3. All advertising materials mentioning features or use of this software 769 * must display the following acknowledgement: 770 * "This product includes cryptographic software written by 771 * Eric Young (eay@cryptsoft.com)" 772 * The word 'cryptographic' can be left out if the rouines from the library 773 * being used are not cryptographic related :-). 774 * 4. If you include any Windows specific code (or a derivative thereof) from 775 * the apps directory (application code) you must include an acknowledgement: 776 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 777 * 778 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 779 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 780 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 781 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 782 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 783 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 784 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 785 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 786 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 787 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 788 * SUCH DAMAGE. 789 * 790 * The licence and distribution terms for any publically available version or 791 * derivative of this code cannot be changed. i.e. this code cannot simply be 792 * copied and put under another distribution licence 793 * [including the GNU Public Licence.] 794 */ 795 796 797expat 798----- 799 800The :mod:`pyexpat` extension is built using an included copy of the expat 801sources unless the build is configured ``--with-system-expat``:: 802 803 Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd 804 and Clark Cooper 805 806 Permission is hereby granted, free of charge, to any person obtaining 807 a copy of this software and associated documentation files (the 808 "Software"), to deal in the Software without restriction, including 809 without limitation the rights to use, copy, modify, merge, publish, 810 distribute, sublicense, and/or sell copies of the Software, and to 811 permit persons to whom the Software is furnished to do so, subject to 812 the following conditions: 813 814 The above copyright notice and this permission notice shall be included 815 in all copies or substantial portions of the Software. 816 817 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 818 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 819 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 820 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 821 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 822 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 823 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 824 825 826libffi 827------ 828 829The :mod:`_ctypes` extension is built using an included copy of the libffi 830sources unless the build is configured ``--with-system-libffi``:: 831 832 Copyright (c) 1996-2008 Red Hat, Inc and others. 833 834 Permission is hereby granted, free of charge, to any person obtaining 835 a copy of this software and associated documentation files (the 836 ``Software''), to deal in the Software without restriction, including 837 without limitation the rights to use, copy, modify, merge, publish, 838 distribute, sublicense, and/or sell copies of the Software, and to 839 permit persons to whom the Software is furnished to do so, subject to 840 the following conditions: 841 842 The above copyright notice and this permission notice shall be included 843 in all copies or substantial portions of the Software. 844 845 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, 846 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 847 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 848 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 849 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 850 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 851 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 852 DEALINGS IN THE SOFTWARE. 853 854 855zlib 856---- 857 858The :mod:`zlib` extension is built using an included copy of the zlib 859sources if the zlib version found on the system is too old to be 860used for the build:: 861 862 Copyright (C) 1995-2011 Jean-loup Gailly and Mark Adler 863 864 This software is provided 'as-is', without any express or implied 865 warranty. In no event will the authors be held liable for any damages 866 arising from the use of this software. 867 868 Permission is granted to anyone to use this software for any purpose, 869 including commercial applications, and to alter it and redistribute it 870 freely, subject to the following restrictions: 871 872 1. The origin of this software must not be misrepresented; you must not 873 claim that you wrote the original software. If you use this software 874 in a product, an acknowledgment in the product documentation would be 875 appreciated but is not required. 876 877 2. Altered source versions must be plainly marked as such, and must not be 878 misrepresented as being the original software. 879 880 3. This notice may not be removed or altered from any source distribution. 881 882 Jean-loup Gailly Mark Adler 883 jloup@gzip.org madler@alumni.caltech.edu 884 885 886cfuhash 887------- 888 889The implementation of the hash table used by the :mod:`tracemalloc` is based 890on the cfuhash project:: 891 892 Copyright (c) 2005 Don Owens 893 All rights reserved. 894 895 This code is released under the BSD license: 896 897 Redistribution and use in source and binary forms, with or without 898 modification, are permitted provided that the following conditions 899 are met: 900 901 * Redistributions of source code must retain the above copyright 902 notice, this list of conditions and the following disclaimer. 903 904 * Redistributions in binary form must reproduce the above 905 copyright notice, this list of conditions and the following 906 disclaimer in the documentation and/or other materials provided 907 with the distribution. 908 909 * Neither the name of the author nor the names of its 910 contributors may be used to endorse or promote products derived 911 from this software without specific prior written permission. 912 913 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 914 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 915 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 916 FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 917 COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 918 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 919 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 920 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 921 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 922 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 923 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 924 OF THE POSSIBILITY OF SUCH DAMAGE. 925 926 927libmpdec 928-------- 929 930The :mod:`_decimal` Module is built using an included copy of the libmpdec 931library unless the build is configured ``--with-system-libmpdec``:: 932 933 Copyright (c) 2008-2016 Stefan Krah. All rights reserved. 934 935 Redistribution and use in source and binary forms, with or without 936 modification, are permitted provided that the following conditions 937 are met: 938 939 1. Redistributions of source code must retain the above copyright 940 notice, this list of conditions and the following disclaimer. 941 942 2. Redistributions in binary form must reproduce the above copyright 943 notice, this list of conditions and the following disclaimer in the 944 documentation and/or other materials provided with the distribution. 945 946 THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND 947 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 948 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 949 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 950 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 951 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 952 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 953 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 954 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 955 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 956 SUCH DAMAGE. 957