python 定时任务去检测服务器端口是否通的实例

import socket
import threading
import time
 
def testconn( host , port ):
  sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  sk.settimeout(1)
  try:
    sk.connect((host,port))
    return host+" Server is "+str(port)+" connect"
  except Exception:
    return host+" Server is "+str(port)+" not connect!"
  sk.close()
 
class Test(threading.Thread):
  def __init__(self):
    pass
  def test(self):
    print testconn('172.31.32.3',22)
  def run(self):
    while True:
      #print time.strftime('%Y-%m-%d %H:%M:%S')
      self.test()
      time.sleep(1)
a=Test()
a.run()