--- title: "nltk Breaking Changes on PyPI | Since.dev" description: "What each nltk release removed, renamed or changed: 90 breaking changes in 2 versions on PyPI, each with its source." canonical_url: https://since.dev/packages/pypi/nltk last_updated: 2026-10-21 --- # nltk breaking changes Every breaking API change we have recorded in nltk on PyPI: 90 breaking changes in 2 versions. Below are its newest 2 versions, removals and renames first, each with its source. Newest change October 21, 2026 ## 3.10.4 81 breaking changes, first published October 21, 2026. - **Removed** `nltk.ccg.chart.re` nltk.ccg.chart.re was removed in nltk 3.10.4 [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Removed** `nltk.ccg.logic.re` nltk.ccg.logic.re was removed in nltk 3.10.4 [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Removed** `nltk.corpus.reader.nps_chat.codecs` nltk.corpus.reader.nps_chat.codecs was removed in nltk 3.10.4 [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Removed** `nltk.corpus.reader.rte.codecs` nltk.corpus.reader.rte.codecs was removed in nltk 3.10.4 [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Removed** `nltk.ReppTokenizer.working_dir` ReppTokenizer.working_dir was removed in nltk 3.10.4 [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Removed** `nltk.sentiment.util.extract_fields` nltk.sentiment.util.extract_fields was removed in nltk 3.10.4 [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Removed** `nltk.tbl.demo.pickle_load` nltk.tbl.demo.pickle_load was removed in nltk 3.10.4 [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Removed** `nltk.test.unit` The attack harnesses and their fixtures are no longer in the wheel. Import nltk.test.unit only from a source checkout or the sdist. [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Renamed** `nltk.classify.megam.find_binary` Use nltk.classify.megam.find_binary_absolute instead. [pypi.org](https://pypi.org/project/nltk/3.10.4/) - **Renamed** `nltk.classify.tadm.find_binary` Use nltk.classify.tadm.find_binary_absolute instead. [pypi.org](https://pypi.org/project/nltk/3.10.4/) And 71 more in this version. ## 3.10.4-rc1 9 breaking changes, first published October 21, 2026. - **Behavior changed** `nltk.chat80.Concept` Shared default values in chat80 Concept were fixed, so instances no longer share defaults. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.data.find` nltk.data.find() now refuses a data root or directory on the way to a resource that another account can write to, warning and continuing to later roots. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.download` Downloaded package archives are now private to the installing account and an install another account must read is extracted. Use extract=True or --no-extract to decide explicitly. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.internals.java` The java() cmd argument now rejects Java launcher switches and @argfiles, and its options are validated against an allowlist, so calls relying on them will fail. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.parse.dependencygraph.DependencyGraph` Cycle detection in DependencyGraph now works, so graphs with cycles are rejected. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.pathsec.urlopen` Requests to internal network addresses are blocked and file paths outside trusted data directories are refused. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.pickle` Pickled models now load through a restricted unpickler, so pickles using disallowed globals will be refused. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.tokenize.punkt` Text NLTK writes to the terminal and CSV files is now sanitized against injection, which changes output. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) - **Behavior changed** `nltk.tree.Tree.chomsky_normal_form` Relation walks deeper than MAX_RECURSION_DEPTH are now refused with an error instead of being truncated. [github.com](https://github.com/nltk/nltk/releases/tag/v3.10.4-rc1) ## Check your code These are the changes. To see which of them reach your code, [scan a public repository](https://since.dev/scan.md), or have your coding agent call `check_code` with your manifest or lockfile over [MCP](https://since.dev/docs.md#mcp). [The API](https://since.dev/docs.md#api) reads every change in every version, not only the newest. On Team and up, a fix pull request opens for the changes that reach a connected repository. Nothing merges or deploys. ## Put your code on continuous management. Scan a public repository now, or give your agent one line. ### See how out of date your code is. [Scan a repository](https://since.dev/scan.md). Any public GitHub repository. No sign-in. ### Tell your agent what changed since it was trained. `claude mcp add --transport http since https://api.since.dev/mcp` --- Every page on this site as Markdown: https://since.dev/sitemap.md. For agents: https://since.dev/llms.txt.