def test_calc_iv_put(self): quote = OptionQuote('ABC', consts.PUT, date(2015, 1, 31), 60., date(2015, 1, 1), None, None, None, 52, None, None) iv = math.calc_iv(quote, 7.86, interest_rate=0.05) self.assertAlmostEqual(iv, 0.2998, places=3)
def _parse_data(symbol, data, is_eod, db_name=None, timestamp=None): """Parses realtime (delayed) options quotes from CBOE and saves to database. Args: symbol (str): Symbol. data (str): Raw quotes for the symbol. is_eod (bool): If True: mark received quotes as EOD (time=None), if False: store actual time. db_name (str): Optional database name. timestamp (datetime): Optional datetime for the data. Returns: list: List of OptionQuote objects. """ logger = logging.getLogger(__name__) if timestamp is None: timestamp = dates.get_database_timestamp() date = timestamp.date() time = None if is_eod else timestamp.time() quotes = [] stock_price = None expirations = dates.get_expirations(symbol) with database.connect_db(db_name) as db: for line in data.splitlines(): values = line.strip().split(',') if (len(values) == 4) and (stock_price is None): stock_price = utils.to_float(values[1]) continue if len(values) != 15: continue if values[0] == 'Calls' or values[0].find('-') >= 0: continue code_values = values[0].split(' ') if len(code_values) != 4: continue position = code_values[3].find(code_values[0]) if code_values[3][1:position] in SKIP_SYMBOLS: continue expiration_year = 2000 + int(code_values[0]) expiration_month = MONTHS[code_values[1]] expiration_day = int(code_values[3][position + 2:position + 4]) expiration = datetime(expiration_year, expiration_month, expiration_day).date() if expiration not in expirations: continue strike = utils.to_float(code_values[2]) for type_, bid, ask in [ (consts.CALL, values[3], values[4]), (consts.PUT, values[10], values[11]), ]: bid = utils.to_float(bid) ask = utils.to_float(ask) quote = OptionQuote( symbol, type_, expiration, strike, date, time, bid, ask, stock_price, None, None) iv_bid = math.calc_iv(quote, bid) * 100 iv_ask = math.calc_iv(quote, ask) * 100 quote = OptionQuote( symbol, type_, expiration, strike, date, time, bid, ask, stock_price, iv_bid, iv_ask) save_quote(db, quote) quotes.append(quote) logger.info('... quotes parsed: %d', len(quotes)) return quotes
def test_calc_iv_call(self): quote = OptionQuote('ABC', consts.CALL, date(2015, 1, 31), 60., date(2015, 1, 1), None, None, None, 52, None, None) iv = math.calc_iv(quote, 3.00, interest_rate=0.05) self.assertAlmostEqual(iv, 0.9780, places=3)