nltk breaking changes

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
• Removed nltk.ccg.logic.re
  nltk.ccg.logic.re was removed in nltk 3.10.4 pypi.org
• Removed nltk.corpus.reader.nps_chat.codecs
  nltk.corpus.reader.nps_chat.codecs was removed in nltk 3.10.4 pypi.org
• Removed nltk.corpus.reader.rte.codecs
  nltk.corpus.reader.rte.codecs was removed in nltk 3.10.4 pypi.org
• Removed nltk.ReppTokenizer.working_dir
  ReppTokenizer.working_dir was removed in nltk 3.10.4 pypi.org
• Removed nltk.sentiment.util.extract_fields
  nltk.sentiment.util.extract_fields was removed in nltk 3.10.4 pypi.org
• Removed nltk.tbl.demo.pickle_load
  nltk.tbl.demo.pickle_load was removed in nltk 3.10.4 pypi.org
• 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
• Renamed nltk.classify.megam.find_binary
  Use nltk.classify.megam.find_binary_absolute instead. pypi.org
• Renamed nltk.classify.tadm.find_binary
  Use nltk.classify.tadm.find_binary_absolute instead. pypi.org

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
• 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
• 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
• 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
• Behavior changed nltk.parse.dependencygraph.DependencyGraph
  Cycle detection in DependencyGraph now works, so graphs with cycles are rejected. github.com
• Behavior changed nltk.pathsec.urlopen
  Requests to internal network addresses are blocked and file paths outside trusted data directories are refused. github.com
• Behavior changed nltk.pickle
  Pickled models now load through a restricted unpickler, so pickles using disallowed globals will be refused. github.com
• Behavior changed nltk.tokenize.punkt
  Text NLTK writes to the terminal and CSV files is now sanitized against injection, which changes output. github.com
• 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

Check your code

These are the changes. To see which of them reach your code, scan a public repository, or have your coding agent call check_code with your manifest or lockfile over MCP. The 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.