import urllib2
import json
import time

# Form: http://digitalpbk.com/stock/google-finance-get-stock-quote-realtime
class GoogleFinanceAPI:
    def __init__(self):
        self.prefix = "http://finance.google.com/finance/info?client=ig&q="

    def get(self,symbol,exchange):
        url = self.prefix+"%s:%s"%(exchange,symbol)
        u = urllib2.urlopen(url)
        content = u.read()

        obj = json.loads(content[3:])
        return obj[0]


if __name__ == "__main__":
    c = GoogleFinanceAPI()

    while 1:
        quote = c.get("MSFT","NASDAQ")
        print quote
        time.sleep(30)