python链接远程ftp服务器并列出目录下的文件，这段python代码用到了pysftp模块，使用sftp协议，对数据进行加密传输

import pysftp
  
srv = pysftp.Connection(host="your_FTP_server", username="your_username",
password="your_password")
  
# Get the directory and file listing
data = srv.listdir()
  
# Closes the connection
srv.close()
  
# Prints out the directories and files, line by line
for i in data:
    print i