Python scan port script code

# -*- coding:utf8 -*-
#!/usr/bin/python
# Program:         端口扫描
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)