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Issues list

For loop with a Generator[Any, Any, NoReturn] doesn't cause unreachable code. bug mypy got something wrong topic-reachability Detecting unreachable code
#18891 opened Apr 7, 2025 by MoonMountain2k
For tuple in match, _ isn't determined to be Never, but _, _ is bug mypy got something wrong topic-match-statement Python 3.10's match statement topic-reachability Detecting unreachable code
#18792 opened Mar 12, 2025 by wyattscarpenter
1
"Statement is unreachable" when doing match on type objects bug mypy got something wrong topic-match-statement Python 3.10's match statement topic-reachability Detecting unreachable code
#18524 opened Jan 24, 2025 by woodruffw
1
Flag None check on value that cannot be None bug mypy got something wrong topic-reachability Detecting unreachable code
#18386 opened Dec 30, 2024 by nickdrozd
4
[regression] no type checking beyond perceived isinstance guard failure bug mypy got something wrong topic-reachability Detecting unreachable code topic-usability
#18329 opened Dec 23, 2024 by yonilerner
1
3
Enable --warn-unreachable in --strict in Mypy 2.0 topic-configuration Configuration files and flags topic-reachability Detecting unreachable code
#18078 opened Oct 31, 2024 by davidhalter
1
7
assert_never on exclusive union of tuples (type narrowing issue?) topic-match-statement Python 3.10's match statement topic-reachability Detecting unreachable code
#16835 opened Jan 29, 2024 by hjwp
4
Adverse interaction between unreachable code, type: ignore[...], and pass or ... bug mypy got something wrong topic-reachability Detecting unreachable code topic-type-ignore # type: ignore comments
#16232 opened Oct 6, 2023 by finite-state-machine
(🎁) Report unreachable when TypeGuard[Never] feature topic-reachability Detecting unreachable code topic-typeguard-typeis TypeGuard / TypeIs / PEP 647 / PEP 742
#16160 opened Sep 22, 2023 by KotlinIsland
1
[match-case] unreachable raised multiple times instead of once. feature topic-match-statement Python 3.10's match statement topic-reachability Detecting unreachable code topic-type-ignore # type: ignore comments
#15866 opened Aug 14, 2023 by randolf-scholz
7
Exhaustiveness checking false positives when using match self or match self.value inside an Enum bug mypy got something wrong topic-reachability Detecting unreachable code
#15186 opened May 4, 2023 by rouge8
3
Context manager __exit__ return type bool | None is treated as None for reachability analysis bug mypy got something wrong topic-reachability Detecting unreachable code
#15158 opened Apr 30, 2023 by VincentVanlaer
2
Exhaustiveness checking fails on non-trivial use of pattern matching bug mypy got something wrong topic-match-statement Python 3.10's match statement topic-reachability Detecting unreachable code
#14833 opened Mar 4, 2023 by ajasmin
5
possibly-undefined rule should respect exhaustive checking feature topic-possibly-undefined possibly-undefined error code topic-reachability Detecting unreachable code
#14771 opened Feb 23, 2023 by sjdemartini
4
None is not a possible value for type variable bound to optional value?! bug mypy got something wrong topic-reachability Detecting unreachable code topic-type-variables
#14754 opened Feb 21, 2023 by NeilGirdhar
False unreachable warning on match statement bug mypy got something wrong topic-match-statement Python 3.10's match statement topic-reachability Detecting unreachable code
#14485 opened Jan 21, 2023 by delfick
2
Support exhaustiveness checking of single enumerable properties feature topic-reachability Detecting unreachable code
#14261 opened Dec 7, 2022 by aiven-anton
2
False positive statement is unreachable in try-finally related to KeyboardInterrupt bug mypy got something wrong topic-reachability Detecting unreachable code
#13104 opened Jul 11, 2022 by bbatliner
2
Narrowing an optional class type to an unrelated Protocol causes a false unreachable error bug mypy got something wrong topic-protocols topic-reachability Detecting unreachable code topic-type-narrowing Conditional type narrowing / binder
#12802 opened May 17, 2022 by ajkaijanaho
False positive unreachable after type:ignore (also possibly invalid erorr code) bug mypy got something wrong topic-error-reporting How we report errors topic-reachability Detecting unreachable code topic-type-ignore # type: ignore comments topic-usability
#12785 opened May 14, 2022 by mortoray
2
Maybe a problem with reachability of Match cases bug mypy got something wrong topic-match-statement Python 3.10's match statement topic-reachability Detecting unreachable code
#12778 opened May 12, 2022 by mrolle45
type narrowing leads to "unreachable" code being actually reachable bug mypy got something wrong topic-reachability Detecting unreachable code
#12598 opened Apr 16, 2022 by Akuli
2
(🐞) Inconsistent reachability depending if module level or not bug mypy got something wrong topic-reachability Detecting unreachable code
#12409 opened Mar 21, 2022 by KotlinIsland
1
(🐞) False error "statement is unreachable" with NoReturn overloaded method bug mypy got something wrong topic-reachability Detecting unreachable code
#12402 opened Mar 21, 2022 by KotlinIsland
(🐞) Artificially literal bools not considered when performing reachability checks where branch terminates feature topic-reachability Detecting unreachable code
#12365 opened Mar 16, 2022 by KotlinIsland
1
1
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