from datetime import datetime import re import os import json import unicodedata categories = [] url = 'https://download.finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s={query}=X' weight = 100 parser_re = re.compile(r'^\W*(\d+(?:\.\d+)?)\W*([^.0-9].+)\W*in?\W*([^\.]+)\W*$', re.I) # noqa db = 1 def normalize_name(name): name = name.lower().replace('-', ' ') name = re.sub(' +', ' ', name) return unicodedata.normalize('NFKD', u"" + name).lower() def name_to_iso4217(name): global db name = normalize_name(name) currencies = db['names'].get(name, [name]) return currencies[0] def iso4217_to_name(iso4217, language): global db return db['iso4217'].get(iso4217, {}).get(language, iso4217) 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) from_currency = name_to_iso4217(from_currency.strip()) to_currency = name_to_iso4217(to_currency.strip()) q = (from_currency + to_currency).upper() params['url'] = url.format(query=q) params['ammount'] = ammount params['from'] = from_currency params['to'] = to_currency params['from_name'] = iso4217_to_name(from_currency, 'en') params['to_name'] = iso4217_to_name(to_currency, 'en') 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} ({5}) = {4} {3} ({6})'.format( resp.search_params['ammount'], resp.search_params['from'], resp.search_params['ammount'] * conversion_rate, resp.search_params['to'], conversion_rate, resp.search_params['from_name'], resp.search_params['to_name'], ) now_date = datetime.now().strftime('%Y%m%d') url = 'https://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 def load(): global db current_dir = os.path.dirname(os.path.realpath(__file__)) json_data = open(current_dir + "/../data/currencies.json").read() db = json.loads(json_data) load()