def download_prices(self):
url = "http://www.google.com/finance/option_chain?q=%s&expd=%d&expm=%d&expy=%d&output=json" % \
(self.parent_stock.get_symbol_for_url(), self.expiryDay, self.expiryMonth, self.expiryYear)
raw_data = fix_output(urllib2.urlopen(url).read())
option_data = byteify(json.loads(raw_data))
self.calls = self._get_prices('call', option_data)
self.puts = self._get_prices('put', option_data)
def __download_expiry_dates(self):
option_dates = None
base_url = "http://www.google.com/finance/option_chain?q=%s&output=json"
for market in self.MARKETS:
adjusted_symbol = self.symbol
if len(market) > 0:
# add the market as a prefix separated by a colon; ex. 'NYSE:V'
adjusted_symbol = '%s%%3A%s' % (market, self.symbol)
url = base_url % adjusted_symbol
logger.info('Attempting to get expiry dates for [%s] with URL: [%s]' % (self.symbol, url))
raw_data = fix_output(urllib2.urlopen(url).read())
option_dates = byteify(json.loads(raw_data))
if 'expirations' in option_dates:
self.symbol_for_url = adjusted_symbol
break
logger.info('No expiry dates found for symbol [%s] with market [%s]' % (self.symbol, market))
option_dates = None
return option_dates