python怎么用函数求矩阵的和

在Python中，你可以定义一个函数来计算两个矩阵的和。首先，你需要确定这两个矩阵的维度是否一致，然后逐元素相加。这里是一个简单的例子：

def matrix_addition(matrix1, matrix2):
    # 检查矩阵维度是否相同
    assert len(matrix1) == len(matrix2), "Matrices must have the same number of rows."
    assert len(matrix1[0]) == len(matrix2[0]), "Matrices must have the same number of columns."

    # 初始化一个新的空矩阵用于结果
    result = [[0] * len(matrix1[0]) for _ in range(len(matrix1))]

    # 逐元素相加
    for i in range(len(matrix1)):
        for j in range(len(matrix1[0])):
            result[i][j] = matrix1[i][j] + matrix2[i][j]

    return result

# 示例
matrix1 = [[1, 2], [3, 4]]
matrix2 = [[5, 6], [7, 8]]
sum_matrix = matrix_addition(matrix1, matrix2)
print(sum_matrix)