如何对一个类中的两个矩阵求和

class MatrixSum:
    def sumMatrix(self, matrix1, matrix2):
        if len(matrix1) != len(matrix2) or len(matrix1[0]) != len(matrix2[0]):
            raise ValueError("The dimensions of the matrices are not the same.")
        
        result = [[0] * len(matrix1[0]) for _ in range(len(matrix1))]
        
        for i in range(len(matrix1)):
            for j in range(len(matrix1[0])):
                result[i][j] = matrix1[i][j] + matrix2[i][j]
        
        return result