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Consider adding a rule that enforces using TypeIs instead of TypeGuard #12277

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ItsDrike opened this issue Jul 10, 2024 · 0 comments
Open

Consider adding a rule that enforces using TypeIs instead of TypeGuard #12277

ItsDrike opened this issue Jul 10, 2024 · 0 comments
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rule Implementing or modifying a lint rule

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@ItsDrike
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In PEP 742, a new TypeIs annotation has been added. This provides an alternative to TypeGuard , which supports proper type narrowing. In vast majority of cases, people should use TypeIs as opposed to TypeGuard and the use of TypeGuard in code is likely a mistake.

It would therefore be nice to have a rule that bans the use of TypeGuard completely, just like the ANN401 rule, that bans typing.Any.
@charliermarsh charliermarsh added the rule Implementing or modifying a lint rule label Jul 12, 2024
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Labels
rule Implementing or modifying a lint rule
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@charliermarsh @ItsDrike