问Python SFTP:连接中断时获取通知

EN

import paramiko
import time

def connSFTP(ssh_key_filepath,host,user):
    #Fehleroptionen 1. Pfad zum SSH-KeyError
                        #-SSH-Key vorhanden?
                    #2.Host und/oder Username ist falsch

    k = paramiko.RSAKey.from_private_key_file(ssh_key_filepath) #SSH KEY
    c = paramiko.SSHClient()
    c.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    c.connect( hostname = host, username = user , pkey = k )
    sftp = c.open_sftp()

    return sftp

def main():
    ssh_key_filepath = '/home/dtv/.ssh/id_rsa'
    hostname = 'HostAdress'
    username = 'user'
    sftp = connSFTP(ssh_key_filepath,hostname,username)
    print('Connected')

    time.sleep(30)

    #sftp.close()

if __name__ == '__main__':
    main()