Update config, fix lints for ruff 0.15.2

[inducer]

No description provided.

[Copilot]

Pull request overview

This PR updates Ruff configuration and adjusts imports to satisfy newer Ruff linting behavior, primarily by suppressing a new S102 finding in tests and modernizing some import statements.

Changes:

• Add Ruff per-file-ignores for S102 (use of exec) in tests (and doc/conf.py).
• Update test imports to use from pycparserext import ... style.
• Normalize c_ast/yacc imports in ext_c_parser.py and ext_c_generator.py.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
test/test_pycparserext.py	Adjusts local imports to a different import form for lint compliance.
pyproject.toml	Adds Ruff per-file ignore configuration for S102.
pycparserext/ext_c_parser.py	Changes c_ast/yacc import style (currently introduces an unused import lint issue).
pycparserext/ext_c_generator.py	Changes c_ast import to from pycparser import c_ast.

Comments suppressed due to low confidence (1)

pyproject.toml:42

• The new per-file ignore suppresses S102 for all files under test/*.py. Since the only exec(...) usage in the test suite is in test/test_pycparserext.py, it would be more targeted to either ignore S102 for that specific file or add a line-level # noqa: S102 where exec is used, to avoid masking future exec usage elsewhere in tests.

[tool.ruff.lint.per-file-ignores]
"test/*.py" = ["S102"]
"doc/conf.py" = ["S102"]

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

yacc is imported but never referenced anywhere in this module. With F enabled in Ruff, from pycparser.ply import yacc will trigger an F401 unused-import error (the # noqa: F401 only applies to the fallback import). Either remove the yacc imports entirely, or add # noqa: F401 consistently (and ideally a short comment if the import is needed for side effects).