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This PR updates idna from 3.4 to 3.11.

Changelog

3.11

- Update to Unicode 16.0.0, including significant changes to UTS46
processing. As a result of Unicode ending support for it, transitional
processing no longer has an effect and returns the same result.
- Add support for Python 3.14, lowest supported version is Python 3.8.
- Various updates to packaging, including PEP 740 support.

3.10

+++++++++++++++++

- Reverted to Unicode 15.1.0 data. Unicode 16 has some significant changes
to UTS46 processing that will require more work to properly implement.

3.9

++++++++++++++++

- Update to Unicode 16.0.0
- Deprecate setup.cfg in favour of pyproject.toml
- Use ruff for code formatting

Thanks to Waket Zheng for contributions to this release.

3.8

++++++++++++++++

- Fix regression where IDNAError exception was not being produced for
certain inputs.
- Add support for Python 3.13, drop support for Python 3.5 as it is no
longer testable.
- Documentation improvements
- Updates to package testing using Github actions

Thanks to Hugo van Kemenade for contributions to this release.

3.7

++++++++++++++++

- Fix issue where specially crafted inputs to encode() could
take exceptionally long amount of time to process. [CVE-2024-3651]

Thanks to Guido Vranken for reporting the issue.

3.6

++++++++++++++++

- Fix regression to include tests in source distribution.

3.5

++++++++++++++++

- Update to Unicode 15.1.0
- String codec name is now "idna2008" as overriding the system codec
"idna" was not working.
- Fix typing error for codec encoding
- "setup.cfg" has been added for this release due to some downstream
lack of adherence to PEP 517. Should be removed in a future release
so please prepare accordingly.
- Removed reliance on a symlink for the "idna-data" tool to comport
with PEP 517 and the Python Packaging User Guide for sdist archives.
- Added security reporting protocol for project

Thanks Jon Ribbens, Diogo Teles Sant'Anna, Wu Tingfeng for contributions
to this release.
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@pyup-bot pyup-bot mentioned this pull request Oct 13, 2025
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codecov bot commented Oct 13, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5f02dc7) to head (ef1df64).

Additional details and impacted files
@@            Coverage Diff            @@
##            master      #540   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           12        12           
  Lines          126       126           
=========================================
  Hits           126       126           
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