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[ruff] Add never-union rule to detect redundant typing.NoReturn and typing.Never (#9217)

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## Summary

Adds a rule to detect unions that include `typing.NoReturn` or
`typing.Never`. In such cases, the use of the bottom type is redundant.

Closes https://github.com/astral-sh/ruff/issues/9113.

## Test Plan

`cargo test`
This commit is contained in:
Charlie Marsh 2023-12-21 15:53:31 -05:00 • committed by GitHub
parent a3e06e5a9d
commit a9ceef5b5d
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17 changed files with 283 additions and 73 deletions
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crates/ruff_linter/src/codes.rs
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@ -901,6 +901,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
(Ruff, "017") => (RuleGroup::Nursery, rules::ruff::rules::QuadraticListSummation),
(Ruff, "018") => (RuleGroup::Preview, rules::ruff::rules::AssignmentInAssert),
(Ruff, "019") => (RuleGroup::Preview, rules::ruff::rules::UnnecessaryKeyCheck),
(Ruff, "020") => (RuleGroup::Preview, rules::ruff::rules::NeverUnion),
(Ruff, "100") => (RuleGroup::Stable, rules::ruff::rules::UnusedNOQA),
(Ruff, "200") => (RuleGroup::Stable, rules::ruff::rules::InvalidPyprojectToml),