recipe-189971.py 文件源码

def vector_inner_product(self, a, b):
        """Takes the inner product of vectors a and b

        a and b are lists.
        This is a private function called by matrix_multiply.
        """
        assert(isinstance(a, types.ListType))
        assert(isinstance(b, types.ListType))
        return reduce(operator.add, map(operator.mul, a, b))