python 端口扫描 延时设置多久

#!/usr/bin/python
# -*- coding:utf8 -*-
# Python: 2.7.8
# Platform: Windows
# Authro: wucl
# Program: 端口扫描
# History: 2015.6.1

import socket, time, thread
socket.setdefaulttimeout(3)

def socket_port(ip,port):
"""
输入IP和端口号，扫描判断端口是否开放
"""
try:
if port>=65535:
print u'端口扫描结束'
s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
result=s.connect_ex((ip,port))
if result==0:
lock.acquire()
print ip,u':',port,u'端口开放'
lock.release()
s.close()
except:
print u'端口扫描异常'

def ip_scan(ip):
"""
输入IP，扫描IP的0-65534端口情况
"""
try:
print u'开始扫描 %s' % ip
start_time=time.time()
for i in range(0,65534):
thread.start_new_thread(socket_port,(ip,int(i)))
print u'扫描端口完成，总共用时 ：%.2f' %(time.time()-start_time)
raw_input("Press Enter to Exit")
except:
print u'扫描ip出错'

if __name__=='__main__':
url=raw_input('Input the ip you want to scan:\n')
lock=thread.allocate_lock()
ip_scan(url)

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