gistfile1.py

#!/usr/bin/env python

from termcolor import colored
import requests
import time
 
while True:
    ltc = requests.get("https://btc-e.com/api/2/ltc_usd/ticker").json()
    btc = requests.get("https://btc-e.com/api/2/btc_usd/ticker").json()
 
    sellratio = 1.0 / (1.0 / (float(ltc['ticker']['sell'] / float(btc['ticker']['sell']))))
    buyratio = 1.0 / (1.0 / (float(ltc['ticker']['buy'] / float(btc['ticker']['buy']))))
    print colored("Buy Ratio is: %.5f" % buyratio, "green"),  colored("Sell Ratio is: %.5f" % sellratio, "red")
 
 
    time.sleep(3)