#coding:utf-8  import socket  import threading  import time  class SkPort(threading.Thread):      def __init__(self,ip,port):          threading.Thread.__init__(self)          self.ip = ip          self.port = port      def run(self):          sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)          sk.settimeout(1000)          try:              sk.connect((self.ip,self.port))              print('Server %s port %d OK!' % (self.ip,self.port))          except Exception:              # print('Server %s port %d is not connected!' % (self.ip,self.port))              error = self.port          sk.close()  def main():      ip = '127.0.0.1'      sport = int(raw_input('begin port:'))      eport = int(raw_input('end port:'))      for port in range(sport,eport+1):          item = (ip,port)          t = SkPort(ip,port)          t.start()  if __name__ == '__main__':      main()