Version 3.9.2 2025-10-01

• Update download checksums to use SHA256 in built index
• Fix percentage escape in new-style string formatting
• replace shortened URLs using goo.gl
• Make Wordnet interoperable with various taggers and tagged corpora
• Fix saving PerceptronTagger
• Document how to reproduce old Wordnet studies
• properly initialize Portuguese corpus reader
• support for mixed rules conversion into Chomsky Normal Form
• only import tkinter if a GUI is needed
• issue #2112 with Corenlp
• new environment variable NLTK_DOWNLOADER_FORCE_INTERACTIVE_SHELL
• Lesk defaults to most frequent sense in case of ties

Thanks to the following contributors to 3.9.2: Jose Cols, Peter de Blanc, GeneralPoxter, Eric Kafe, William LaCroix, Jason Liu, Samer Masterson, Mike014, purificant, Andrew Ernest Ritz, samertm, Ikram Ul Haq, Christopher Smith, Ryan Mannion

Version 3.9.1 2024-08-19

• Fixed bug that prevented wordnet from loading

Version 3.9 2024-08-18

• Fix security vulnerability CVE-2024-39705 (breaking change)
• Replace pickled models (punkt, chunker, taggers) by new pickle-free "_tab" packages
• No longer sort Wordnet synsets and relations (sort in calling function when required)
• Only strip the last suffix in Wordnet Morphy, thus restricting synsets() results
• Add Python 3.12 support
• Many other minor fixes

Thanks to the following contributors to 3.8.2: Tom Aarsen, Cat Lee Ball, Veralara Bernhard, Carlos Brandt, Konstantin Chernyshev, Michael Higgins, Eric Kafe, Vivek Kalyan, David Lukes, Rob Malouf, purificant, Alex Rudnick, Liling Tan, Akihiro Yamazaki.

Version 3.8.1 2023-01-02

• Resolve RCE vulnerability in localhost WordNet Browser (#3100)
• Remove unused tool scripts (#3099)
• Resolve XSS vulnerability in localhost WordNet Browser (#3096)
• Add Python 3.11 support (#3090)

Thanks to the following contributors to 3.8.1: Francis Bond, John Vandenberg, Tom Aarsen

Version 3.8 2022-12-12

• Refactor dispersion plot (#3082)
• Provide type hints for LazyCorpusLoader variables (#3081)
• Throw warning when LanguageModel is initialized with incorrect vocabulary (#3080)