8000 Exclude irrelevant members in `narrow_declared_type` from union overlapping with enum by sterliakov · Pull Request #18897 · python/mypy · GitHub
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Exclude irrelevant members in narrow_declared_type from union overlapping with enum #18897

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Merged
merged 6 commits into from
Apr 11, 2025
Merged

Exclude irrelevant members in narrow_declared_type from union overlapping with enum #18897

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274789c
Do not leak TypeGuardedType from `narrow_declared_type` with enums
sterliakov Apr 7, 2025
aa219cf
Restore error back
sterliakov Apr 7, 2025
4e59a14
Merge remote-tracking branch 'upstream/master'
sterliakov Apr 9, 2025
ac0d9cb
Remove error from the test again, fixed separately
sterliakov Apr 9, 2025
b3b5f92
Add an explicit test for changed behaviour of enum/union overlap
sterliakov Apr 9, 2025
c8bd148
Address review comments
sterliakov Apr 9, 2025
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Restore error back
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@sterliakov
sterliakov committed Apr 7, 2025
commit aa219cff7eea6ffb79d238fb419fb408bdcad5fb
3 changes: 2 additions & 1 deletion test-data/unit/check-typeguard.test
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Original file line number Diff line number Diff line change
Expand Up @@ -829,6 +829,7 @@ def process_model(model: Union[MODEL_A, MODEL_B]) -> int:

def handle(model: Model) -> int:
if is_model_a(model) or is_model_b(model):
return process_model(model)
# TODO: should start passing after #18896
return process_model(model) # E: Argument 1 to "process_model" has incompatible type "Model"; expected "Union[Literal[Model.MODEL_A1, Model.MODEL_A2], Literal[Model.MODEL_B]]"
return 0
[builtins fixtures/tuple.pyi]
0