python重写运算符

class Operator(object):
    def __init__(self, task_id):
        self.task_id = task_id

    def __rshift__(self, other):
        print(‘%s>>%s‘ % (self.task_id, other.task_id))
        return other


if __name__ == ‘__main__‘:
    aa = Operator(‘aa‘)
    bb = Operator(‘bb‘)
    cc = Operator(‘cc‘)
    aa >> bb >> cc