如何在列表中找到最常用的值？

def find_most_common_value(lst):
    if not lst:
        return None

    count_dict = {}
    for value in lst:
        if value in count_dict:
            count_dict[value] += 1
        else:
            count_dict[value] = 1

    max_count = max(count_dict.values())
    most_common_values = [key for key, value in count_dict.items() if value == max_count]

    return most_common_values

# 示例用法
my_list = [1, 2, 3, 2, 4, 2, 5, 2]
result = find_most_common_value(my_list)
print(result)  # 输出 [2]