要使用密钥文件进行连接，您将需要在创建连接时将路径传递给密钥文件.为此，请将参数"private_key"设置为文件的路径.

To connect using a key file, you will want to pass the path to the key file when creating the connection. To do this, you'll set the parameter "private_key" to the path to the file.

您上面的代码应如下所示:

Your code above should look something like this:

srv = pysftp.Connection(host="you_FTP_server", username="your_username", private_key="./Path/To/File")

当pySFTP发起连接时，它将尝试使用您传入的文件.如果由于密钥文件而失败，则会引发身份验证异常.

When pySFTP initiates the connection, it will try to use the file you passed in. If it fails because of the keyfile, it will throw an authentication exception.

这是我找到答案的链接: https://pysftp .readthedocs.io/en/release_0.2.7/pysftp.html .

Here's the link to where I found the answer: https://pysftp.readthedocs.io/en/release_0.2.7/pysftp.html.