用python定义两个矩阵，实现矩阵的相加的相乘，并写出示例

好的，下面是Python代码实现两个矩阵的相加和相乘：

# 定义两个矩阵
matrix1 = [[1, 2], [3, 4], [5, 6]]
matrix2 = [[7, 8], [9, 10], [11, 12]]

# 矩阵相加
def matrix_add(matrix1, matrix2):
    result = []
    for i in range(len(matrix1)):
        row = []
        for j in range(len(matrix1[0])):
            row.append(matrix1[i][j] + matrix2[i][j])
        result.append(row)
    return result

# 矩阵相乘
def matrix_multiply(matrix1, matrix2):
    result = []
    for i in range(len(matrix1)):
        row = []
        for j in range(len(matrix2[0])):
            sum = 0
            for k in range(len(matrix2)):
                sum += matrix1[i][k] * matrix2[k][j]
            row.append(sum)
        result.append(row)
    return result

# 输出结果
print("Matrix1: ", matrix1)
print("Matrix2: ", matrix2)
print("Matrix Add: ", matrix_add(matrix1, matrix2))
print("Matrix Multiply: ", matrix_multiply(matrix1, matrix2))

示例输出：

Matrix1:  [[1, 2], [3, 4], [5, 6]]
Matrix2:  [[7, 8], [9, 10], [11, 12]]
Matrix Add:  [[8, 10], [12, 14], [16, 18]]
Matrix Multiply:  [[25, 28], [57, 64], [89, 100]]