portable python

[asit]

I code in both windows and Linux. As python is portable, the o/p
should be same in both cases. But why the following code is perfect in
windows but error one   in Linux ???

from socket import *
import sys

status={0:"open",10049:"address not available",10061:"closed",
10060:"timeout",10056:"already connected",10035:"filtered",11001:"IP
not found",10013:"permission denied"}

def scan(ip,port,timeout):
        s = socket(AF_INET, SOCK_STREAM)
        s.settimeout(timeout)
        try:
            result= s.connect_ex((ip, port))
        except:
            print "Cannot connect to IP"
            return
        s.close()
        return status[result]

if (len(sys.argv) == 4):
        ip=sys.argv[1]
        minrange = int(sys.argv[2])
        maxrange = int(sys.argv[3])
        timeout = 3

        ports=range(minrange,maxrange+1)

        for port in ports:
                print str(port) + " : " + scan(ip,port,timeout)
else:
        print "usage : " + sys.argv[0] + " <ip-address> <min-port
range> <max-port range>"