diff options
Diffstat (limited to 'pint/facets/group/objects.py')
| -rw-r--r-- | pint/facets/group/objects.py | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/pint/facets/group/objects.py b/pint/facets/group/objects.py index 64d91c1..dbd7ecf 100644 --- a/pint/facets/group/objects.py +++ b/pint/facets/group/objects.py @@ -8,7 +8,7 @@ from __future__ import annotations -from typing import Callable, Any, TYPE_CHECKING, Generic +from typing import Callable, Any, TYPE_CHECKING, Generic, Optional from collections.abc import Generator, Iterable from ...util import SharedRegistryObject, getattr_maybe_raise @@ -81,7 +81,7 @@ class Group(SharedRegistryObject): #: A cache of the included units. #: None indicates that the cache has been invalidated. - self._computed_members: frozenset[str] | None = None + self._computed_members: Optional[frozenset[str]] = None @property def members(self) -> frozenset[str]: @@ -195,7 +195,9 @@ class Group(SharedRegistryObject): @classmethod def from_definition( - cls, group_definition: GroupDefinition, add_unit_func: AddUnitFunc | None = None + cls, + group_definition: GroupDefinition, + add_unit_func: Optional[AddUnitFunc] = None, ) -> Group: grp = cls(group_definition.name) |