Method contained_by

lib/sqlalchemy/dialects/postgresql/ranges.py:295–322

Determine whether this range is a contained by `other`.

(self, other: Range[_T])

        )

    def contained_by(self, other: Range[_T]) -> bool:
        "Determine whether this range is a contained by `other`."

        # Any range contains the empty one
        if self.empty:
            return True

        # An empty range does not contain any range except the empty one
        if other.empty:
            return False

        slower = self.lower
        slower_b = self.bounds[0]
        olower = other.lower
        olower_b = other.bounds[0]

        if self._compare_edges(slower, slower_b, olower, olower_b) < 0:
            return False

        supper = self.upper
        supper_b = self.bounds[1]
        oupper = other.upper
        oupper_b = other.bounds[1]

        if self._compare_edges(supper, supper_b, oupper, oupper_b) > 0:
            return False

        return True

    def contains(self, value: Union[_T, Range[_T]]) -> bool:
        "Determine whether this range contains `value`."