Method __iand__

Lib/_weakrefset.py:99–101

(self, other)

    def intersection_update(self, other):
        self.__iand__(other)
    def __iand__(self, other):
        self.data.intersection_update(ref(item) for item in other)
        return self

    def issubset(self, other):
        return self.data.issubset(ref(item) for item in other)