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Updates the requirements on pylint to permit the latest version.

Release notes

Sourced from pylint's releases.

v4.0.8

What's new in Pylint 4.0.8?

Release date: 2026-08-29

False Positives Fixed

• Fix a false positive for :ref:unspecified-encoding when an open call uses a mode argument that cannot be inferred.

  Closes #10201

• Fix a false positive for invalid-name (C0103) on names assigned in an if __name__ == "__main__": block. Such a block reads like a script body, so a name there is now accepted if it matches either the constant or the variable naming style.

  Closes #10766

• Fix false positives for :ref:invalid-str-returned, :ref:invalid-repr-returned, :ref:invalid-format-returned, :ref:invalid-bytes-returned, :ref:invalid-hash-returned, :ref:invalid-index-returned, :ref:invalid-length-returned, :ref:invalid-length-hint-returned, :ref:invalid-getnewargs-returned and :ref:invalid-getnewargs-ex-returned when the returned value is an instance of a subclass of the expected builtin type, such as self in a str subclass or a namedtuple.

  Closes #11306

• Fix false positives for :ref:bad-string-format-type when the argument is an instance of a subclass of int, float or str, such as bool or an IntEnum member formatted with %d.

  Closes #11315

False Negatives Fixed

• redundant-unittest-assert now also flags assertEqual and assertNotEqual when both compared values are constants, e.g. self.assertEqual(5, 5).

  Closes #11321

Other Bug Fixes

... (truncated)

Commits

• ecb84ba Bump pylint to 4.0.8, update changelog (#11355)
• 989e9c5 [Backport maintenance/4.0.x] Support isort 9 (#11354)
• 8c1ee95 Flag assertEqual and assertNotEqual between two constants in W1503
• eadefe3 Fix false positive bad-string-format-type for subclasses of builtin types
• db00e3b [Backport maintenance/4.0.x] fix(docparams): guard decorated_with_property ag...
• 7909c17 Accept subclass instances in the invalid-*-returned checks
• d19640d [Backport maintenance/4.0.x] Fix invalid-name false positive in `if _name...
• 94e5704 Skip unspecified-encoding for unknown open modes (#11163)
• d59b329 fix(refactoring): handle non-AssignName targets in use-yield-from (#11286) (#...
• eea0569 [Backport maintenance/4.0.x] Fix crash in docparams on raising a non-exceptio...
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