如何计算特定子集的平均值并替换该值

def replace_subset_average(arr, start_index, end_index):
    subset = arr[start_index:end_index+1]  # 获取特定子集
    subset_sum = sum(subset)  # 计算子集的总和
    subset_average = subset_sum / len(subset)  # 计算子集的平均值

    # 替换子集中的所有元素为平均值
    for i in range(start_index, end_index+1):
        arr[i] = subset_average

    return arr

# 示例用法
arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
start_index = 2
end_index = 6
result = replace_subset_average(arr, start_index, end_index)
print(result)