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Composition of refinement predicates #2

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espetro opened this issue Sep 27, 2021 · 0 comments

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espetro commented Sep 27, 2021

Currently, it is not possible to compose refinement predicates; for example:

from refined.predicates import NonEmpty, Contains
from typing import Annotated, Literal, List

NonEmptyListWithAZero = Annotated[List[int], NonEmpty[List[int]], Contains[List[Int], Literal[0]]]

However, you can define nested annotated types, which would return a composed annotated type with refinement predicates:

from refined.predicates import NonEmpty, Contains
from typing import Annotated, Literal, List

NonEmptyList = Annotated[List[int], NonEmpty[List[int]]]
ListWithAZero = Annotated[NonEmptyList,  Contains[List[Int], Literal[0]]]

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