python解压TAR文件至指定文件夹的实例

######### Extract all files from src_dir to des_dirdef extract_tar_files(src_dir,des_dir):  files = os.listdir(src_dir)  for file in files:    dir_tmp = os.path.join(src_dir, file)    print dir_tmp    if not os.path.isdir(dir_tmp): ##是文件，非文件夹      #解压特定文件      if dir_tmp.endswith("gz") and (dir_tmp.find(cs.Port_week_perfer_name_start) != -1):        #f = zipfile.ZipFile(dir_tmp, mode="r")        f = tarfile.open(dir_tmp)        names = f.getnames()        for name in names:          f.extract(name, path=des_dir)    else:      extract_tar_files(dir_tmp,des_dir)  return 0