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[syntax-errors] Type parameter lists before Python 3.12 (#16479)

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Summary
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Another simple one, just detect type parameter lists in functions
and classes. Like pyright, we don't emit a second diagnostic for
`type` alias statements, which were also introduced in 3.12.

Test Plan
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Inline tests.
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Brent Westbrook 2025-03-05 08:19:09 -05:00 • committed by GitHub
parent d94a78a134
commit 81bcdcebd3
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2
crates/ruff_python_parser/resources/inline/ok/class_type_params_py312.py Normal file
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# parse_options: {"target-version": "3.12"}
class Foo[S: (str, bytes), T: float, *Ts, **P]: ...

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crates/ruff_python_parser/resources/inline/ok/function_type_params_py312.py Normal file
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# parse_options: {"target-version": "3.12"}
def foo[T](): ...