NLTK Source
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Latest commit 17f3e71 Jan 18, 2017 @stevenbird stevenbird committed on GitHub Merge pull request #1593 from alvations/mwa
Add a corpus reader to the MWA subset of PPDB
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nltk Merge pull request #1593 from alvations/mwa Jan 18, 2017
tools update copyright year to 2017 Dec 31, 2016
web updated for 3.2.2 Dec 31, 2016
.gitattributes Introduce end-of-line normalization Sep 21, 2012
.gitignore Remove TransitionParser temporary files after tests Nov 10, 2016 Add name to contributor list Jan 11, 2017 fix typo Apr 3, 2016
ChangeLog credits for Aline Dec 31, 2016
INSTALL.txt new installation URL Jan 14, 2012
LICENSE.txt update copyright year to 2017 Dec 31, 2016 got rid of any references to javasrc as it was removed Mar 14, 2014
Makefile update copyright year to 2017 Dec 31, 2016 update copyright year to 2017 Dec 31, 2016
RELEASE-HOWTO.txt merged #1582; updated release notes Jan 7, 2017
coverage.xml Better Python 3.5 support Jul 8, 2016
jenkins-job-config.xml some fixes to jenkins-job-config.xml so jenkins works correctly Feb 10, 2014 Download correct version of Stanford CoreNLP in Jenkins CI Jan 17, 2017
nosetests.xml Better Python 3.5 support Jul 8, 2016
nosetests_scrubbed.xml Better Python 3.5 support Jul 8, 2016
pip-req.txt Moved six dependency to cf #1087 #1090 #1164 #1467 Nov 10, 2016
requirements-test.txt Move test optional requirements to requirements-test.txt Dec 16, 2016
setup.cfg updates to support building 2.0.1rc2 Dec 1, 2011 update copyright year to 2017 Dec 31, 2016
tox.ini Add rednose plugin for colored test output (#1536) Dec 5, 2016

Natural Language Toolkit (NLTK)


NLTK -- the Natural Language Toolkit -- is a suite of open source Python modules, data sets and tutorials supporting research and development in Natural Language Processing.

For documentation, please visit


Do you want to contribute with NLTK development? Great! Please read more details at

See also How to contribute to NLTK.


Have you found the toolkit helpful? Please support NLTK development by donating to the project via PayPal, using the link on the NLTK homepage.


If you publish work that uses NLTK, please cite the NLTK book, as follows:

Bird, Steven, Edward Loper and Ewan Klein (2009).
Natural Language Processing with Python.  O'Reilly Media Inc.


Copyright (C) 2001-2017 NLTK Project

For license information, see LICENSE.txt. have a list of everyone contributed to NLTK.


  • NLTK source code is distributed under the Apache 2.0 License.
  • NLTK documentation is distributed under the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States license.
  • NLTK corpora are provided under the terms given in the README file for each corpus; all are redistributable, and available for non-commercial use.
  • NLTK may be freely redistributed, subject to the provisions of these licenses.