Cумма матриц m1

def factorial(n):
    if n == 1:
        return 1
    else:
        return n * factorial(n-1)

def sum_of_numbers(n):
    return sum(range(1, n+1))

class Matrix:
    def __init__(self, rows, cols):
        self.rows = rows
        self.cols = cols
        self.data = [[0 for j in range(cols)] for i in range(rows)]

    def __add__(self, other):
        result = Matrix(self.rows, self.cols)
        for i in range(self.rows):
            for j in range(self.cols):
                result.data[i][j] = self.data[i][j] + other.data[i][j]
        return result

    def __mul__(self, other):
        if self.cols != other.rows:
            raise ValueError("Умножение невозможно")
        result = Matrix(self.rows, other.cols)
        for i in range(self.rows):
            for j in range(other.cols):
                for k in range(self.cols):
                    result.data[i][j] += self.data[i][k] * other.data[k][j]
        return result

m1 = Matrix(3, 3)
m2 = Matrix(3, 3)
m1.data = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
m2.data = [[9, 8, 7], [6, 5, 4], [3, 2, 1]]

m3 = m1 + m2
m4 = m1 * m2

print("Сумма матриц m1 и m2:\n", m3.data)
print("Произведение матриц m1 и m2:\n", m4.data)
print("Факториал числа 5:", factorial(5))
print("Сумма чисел от 1 до 10:", sum_of_numbers(10))