# 創建新路徑def make_dirs(path):  if not os.path.isdir(path):    os.makedirs(path)# 獲取文件的行數def get_total_lines(file_path):  if not os.path.exists(file_path):    return 0  cmd = 'wc -l %s' % file_path  return int(os.popen(cmd).read().split()[0])# 函數split_file_by_row: 按行切分文件# filepath: 切分的目標文件# new_filepath: 生成新文件的路徑# row_cnt: 每個文件最多包含幾行# suffix_type: 新文件后綴類型，如兩位字母或數字# return: 切分后的文件列表def split_file_by_row(filepath, new_filepath, row_cnt, suffix_type='-d'):  tmp_dir = "/split_file_by_row/"  make_dirs(new_filepath)  make_dirs(new_filepath+tmp_dir)  total_rows = get_total_lines(filepath)  file_cnt = int(math.ceil(total_rows*1.0/row_cnt))    command = "split -l%d -a2 %s %s %s" % (row_cnt, suffix_type, filepath, new_filepath+tmp_dir)    os.system(command)    filelist = os.listdir(new_filepath+tmp_dir)  command = "mv %s/* %s"%(new_filepath+tmp_dir, new_filepath)  os.system(command)  command = "rm -r %s"%(new_filepath+tmp_dir)  os.system(command)  return [new_filepath+fn for fn in filelist]