from datetime import datetime import re categories = [] url = 'http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s={query}=X' weight = 100 parser_re = re.compile(r'^\W*(\d+(?:\.\d+)?)\W*([a-z]{3})\W*(?:in)?\W*([a-z]{3})\W*$', re.I) # noqa def request(query, params): m = parser_re.match(query) if not m: # wrong query return params ammount, from_currency, to_currency = m.groups() ammount = float(ammount) q = (from_currency + to_currency).upper() params['url'] = url.format(query=q) params['ammount'] = ammount params['from'] = from_currency params['to'] = to_currency return params def response(resp): results = [] try: _, conversion_rate, _ = resp.text.split(',', 2) conversion_rate = float(conversion_rate) except: return results answer = '{0} {1} = {2} {3} (1 {1} = {4} {3})'.format( resp.search_params['ammount'], resp.search_params['from'], resp.search_params['ammount'] * conversion_rate, resp.search_params['to'], conversion_rate ) now_date = datetime.now().strftime('%Y%m%d') url = 'http://finance.yahoo.com/currency/converter-results/{0}/{1}-{2}-to-{3}.html' # noqa url = url.format( now_date, resp.search_params['ammount'], resp.search_params['from'].lower(), resp.search_params['to'].lower() ) results.append({'answer': answer, 'url': url}) return results