Stock Quotes

import json
import urllib

class Trader:
    IDENT = "https://fastquote.fidelity.com/service/quote/json?productid=embeddedquotes&symbols="
    STQ = 'recentquote.txt'

    def __init__(self, stock):
        self.writeToFile(stock)

    def checkStock(self, stock):
        stock = stock.upper()
        ident = self.IDENT + stock
        info_request = urllib.urlopen(ident).read().replace('\n', '')[1:-1]
        info = json.loads(info_request)['QUOTES'][stock]
        company = info['NAME'].title()
        percent = info['PCT_CHG_TODAY']
        last = '%.2f' % float(info['LAST_PRICE'])
        if percent >= 0:
            sign = '+'
        else:
            sign = '-'
        return (company, percent, last, sign)

    def writeToFile(self, stock):
        c, p, l, s = self.checkStock(stock)
        with open(self.STQ, 'w') as log:
            text = '{0}: ({2} {3} {1}%)'.format(c, p, l, s)
            log.write(text)