class Pet(Enum):
CAT = 1 # Member attribute
DOG = 2 # Member attribute
WOLF: int = 3 # New error: Enum members must be left unannotated
species: str # Considered a non-member attribute
In particular, the specification change can result in issues in type stubs (.pyi files), since
historically it was common to leave the value absent:
# In a type stub (.pyi file)
class Pet(Enum):
# Change in semantics: previously considered members, now non-member attributes
CAT: int
DOG: int
# Mypy will now issue a warning if it detects this situation in type stubs:
# > Detected enum "Pet" in a type stub with zero members.
# > There is a chance this is due to a recent change in the semantics of enum membership.
# > If so, use `member = value` to mark an enum member, instead of `member: type`
class Pet(Enum):
# As per the specification, you should now do one of the following:
DOG = 1 # Member attribute with value 1 and known type
WOLF = cast(int, ...) # Member attribute with unknown value but known type
LION = ... # Member attribute with unknown value and unknown type
Contributed by Terence Honles in PR 17207 and
Shantanu Jain in PR 18068.
Mypy 1.13
We’ve just uploaded mypy 1.13 to the Python Package Index (PyPI).
Mypy is a static type checker for Python. You can install it as follows:
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Bumps mypy from 1.11.1 to 1.13.0.
Changelog
Sourced from mypy's changelog.
... (truncated)
Commits
eb31034
Bump version to 1.13.02eeb588
Update changelog for 1.12.1 (#17999)bc0386b
Changelog for 1.13 (#18000)5c4d2db
Add faster-cache extra, test in CI (#17978)854ad18
Make is_sub_path faster (#17962)50aa4ca
Speed up stubs suggestions (#17965)7c27808
Use orjson instead of json, when available (#17955)2cd2406
Use fast path in modulefinder more often (#17950)e20aaee
Let mypyc optimise os.path.join (#17949)159974c
Use sha1 for hashing (#17953)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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