Raspberry Pi Nokia 5110 display IP http://www.phodal.com/blog/raspberry-pi-use-nokia-5110-display-ip/

rpi5110

import pcd8544.lcd as lcd
import time, os, sys
import subprocess

if not os.geteuid() == 0:
    sys.exit('Script must be run as root')

ON, OFF = [1, 0]

arg='ip route list'
p=subprocess.Popen(arg,shell=True,stdout=subprocess.PIPE)
data = p.communicate()
split_data = data[0].split()
ipaddr = split_data[split_data.index('src')+1]

while(True):
    lcd.init()
    lcd.cls()
    lcd.backlight(ON)
    lcd.define_custom_char([0x30,0x2c,0x66,0x6c,0x30])
    lcd.text(ipaddr)
    time.sleep(100)