类中矩阵乘积定义的问题

class Matrix:
    def __init__(self, rows, cols, elements):
        self.rows = rows
        self.cols = cols
        self.elements = elements

    def multiply(self, other):
        if self.cols != other.rows:
            raise ValueError("Matrix dimensions are not compatible for multiplication")

        result = [[0] * other.cols for _ in range(self.rows)]

        for i in range(self.rows):
            for j in range(other.cols):
                for k in range(self.cols):
                    result[i][j] += self.elements[i][k] * other.elements[k][j]

        return Matrix(self.rows, other.cols, result)