取数组中每n个元素的平均值，并将MATLAB代码转换为Python

function result = average_array_elements(array, n)
    num_elements = floor(length(array) / n);
    result = zeros(1, num_elements);
    for i = 1:num_elements
        start_index = (i-1)*n + 1;
        end_index = i*n;
        result(i) = mean(array(start_index:end_index));
    end
end

import numpy as np

def average_array_elements(array, n):
    num_elements = len(array) // n
    result = np.zeros(num_elements)
    for i in range(num_elements):
        start_index = (i-1)*n + 1
        end_index = i*n
        result[i] = np.mean(array[start_index:end_index])
    return result