在Python中从Dropbox下载文件时出现权限被拒绝错误

通过一个文件夹的元数据，我可以获得要下载到本地计算机的文件的相对文件路径。当我给出dou_get的源代码的这个路径时，它给了我权限被拒绝的错误。这是应该下载并解密文件的代码，但它不能直接下载文件

  @command
  def do_decryptFiles(self, from_path, to_path, key):
    """
    Decrypt all the files given in the folder and subfolders of from_path 

    Examples:
    Dropbox> decryptFiles '/Photos' 'E:\temp' 'a13223132323232' 
    """

    folder_metadata = self.api_client.metadata(from_path)
    print "metadata:", folder_metadata
    for s in folder_metadata['contents']:
        if(s['is_dir'] == True):
            print "directory:", s['path']
        else:
            FFPath = s['path'] 
            print FFPath
            do_get(self, from_path, to_path)
            to_file = open(os.path.abspath(to_path), "wb")
            f, metadata = self.api_client.get_file_and_metadata(self.current_path + FFPath)
            to_file.write(f.read())

当它调用open时，命令行给我权限被拒绝的错误。任何帮助都将不胜感激

Traceback (most recent call last):
  File "example/cli_client.py", line 397, in <module>
    main()
  File "example/cli_client.py", line 394, in main
    term.cmdloop()
  File "C:\Python27\lib\cmd.py", line 142, in cmdloop
    stop = self.onecmd(line)
  File "C:\Python27\lib\cmd.py", line 219, in onecmd
    return func(arg)
  File "example/cli_client.py", line 77, in wrapper
    return f(self, *args)
  File "example/cli_client.py", line 315, in do_decryptFiles
    to_file = open(os.path.abspath(to_path), "wb")
IOError: [Errno 13] Permission denied: 'E:\\proto'

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听起来是本地目录权限问题？我最近也遇到过类似的问题，如果是的话，有一些可能的解决办法

在我看来，这不是Dropbox API问题，而是本地IO错误