用python paramiko ssh 服务器，并pull对应目录代码的脚本
pull.py
import paramiko
import sys
def sshclient_execmd(hostname, port, username, password, execmd):
paramiko.util.log_to_file("paramiko.log")
s = paramiko.SSHClient()
s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
if(port==0):
s.connect(
