如何将列表排序为给定大小的块？

def sort_list_into_blocks(lst, block_size):
    # 切分列表为块
    blocks = [lst[i:i+block_size] for i in range(0, len(lst), block_size)]
    
    # 对每个块进行排序
    sorted_blocks = [sorted(block) for block in blocks]
    
    # 合并排序后的块
    sorted_list = []
    for block in sorted_blocks:
        sorted_list.extend(block)
    
    return sorted_list

# 示例用法
my_list = [9, 3, 7, 1, 5, 2, 8, 6, 4]
block_size = 3
sorted_list = sort_list_into_blocks(my_list, block_size)
print(sorted_list)