Class SingletonPattern

mypy/patterns.py:71–80

class SingletonPattern(Pattern):
    # This can be exactly True, False or None
    value: bool | None

    def __init__(self, value: bool | None) -> None:
        super().__init__()
        self.value = value

    def accept(self, visitor: PatternVisitor[T]) -> T:
        return visitor.visit_singleton_pattern(self)


class SequencePattern(Pattern):