为什么显示1个文件下载，但在LibTorrent中保存2个文件

Question

我想从大型torrent下载特定于torrent的文件我已经编写了这段代码，但它在colab中显示了1个文件的下载状态，但在执行结束后驱动器中有两个文件，例如，它在图片中说第七季第三集已下载，但驱动器中还有第二集。可以吗有人告诉我为什么会这样吗

    //Uploading Torrent File
    from google.colab import files
    uploaded = files.upload()
    //creating Libtorrent instance
    import libtorrent as lt
    import time
    ses = lt.session()
    ses.listen_on(6881, 6891)
    e = lt.bdecode(open("20_gg.torrent", 'rb').read())
    info = lt.torrent_info(e)
    //Printing Number of files so that user select the files he/she wants to Download
    fileStr=''
    FilesIndexToDownload=[]
    FilesStringToDownload=[]
    i=0
    for f in info.files():
      fileStr=f
      print(i,":",fileStr.path)
      i=i+1
    //Saving Number of files User wants to Download
    print("Enter the No of files you want");
    numb=0
    numb=input(numb)
    numb=int(numb)
    //Saving File Index and File String
    for j in range(0,numb):
      print("Enter the Index of ",j," File: \n");
      num=input()
      num=int(num)
      FilesIndexToDownload.append(num)
    for j in FilesIndexToDownload:
      i=0
      for f in info.files():
        if i == j:
          fileStr = f
          FilesStringToDownload.append(fileStr)
        i += 1
    def SelectiveDownload(fileIndex,fileStr):
      print(fileStr.path)
      h = ses.add_torrent(info, "/content/drive/MyDrive/SingleFileCheck/")
      pr = info.map_file(fileIndex,0,fileStr.size)
      n_pieces = pr.length / info.piece_length() + 1 
      for i in range(info.num_pieces()):
          if i in range(int(pr.piece),int(pr.piece+n_pieces)):
              h.piece_priority(i,7)
          else:
              h.piece_priority(i,0)
      while (not h.is_seed()):
          s = h.status()
          state_str = ['queued', 'checking', 'downloading metadata', \
          'downloading', 'finished', 'seeding', 'allocating', 'checking fastresume']
          print('%.2f%% complete (down: %.1f kb/s up: %.1f kB/s peers: %d) %s' % \
                  (s.progress * 100, s.download_rate / 1000, s.upload_rate / 1000, \
                  s.num_peers, state_str[s.state]))
          if s.progress>=1:
              break
          time.sleep(1)
    //Starting Download
    for i in range(0,numb):
    
      SelectiveDownload(FilesIndexToDownload[i],FilesStringToDownload[i])

starting DownloadDownload EndDrive Files

Answer 1

这很可能是因为您要下载的文件的最后一部分与下一个文件重叠。为了验证该片段的散列，需要下载整个片段。您选择下载的文件之外的部分仍然需要保存在的某个位置

在旧版本的libtorrent中，无论您是否需要相应的文件，所有片段都将保存在正确的位置

libtorrent的较新版本（1.1.0及更高版本）默认情况下使用partfiles，将这些“部分”保存在单独的文件中