def split_source_file():
    """
    对文件进行分片

    :return:
    """
    part_number = 1
    index_list = [0]
    while CHUNK_SIZE * part_number < MULTIPART_UPLOAD_FILE_SIZE:
        index_list.append(CHUNK_SIZE * part_number)
        part_number += 1
    if part_number > 10000:
        print ("分片数 %s 已超过最大允许分片数 10000，请调整分片大小." % part_number)
        sys.exit(-1)
    return index_list