old_contents: import pandas as pd
  from .indicator import Indicator
  
  
  class MACD(Indicator):
      _NAME = 'macd'
  
      def __init__(self, currency_pair='btc_jpy', period='1d', short=12, long=26, signal=9):
          super().__init__(currency_pair, period)
          self._short = self._bounded_length(short)
          self._long = self._bounded_length(long)
          self._signal = self._bounded_length(signal)
  
      def request_data(self, count=100, to_epoch_time=None):
          candlesticks_df = self._get_candlesticks_df(count, to_epoch_time)
          macd = self._exec_talib_func(candlesticks_df, price='close', fastperiod=self._short, slowperiod=self._long, signalperiod=self._signal)
  
          formatted_macd = self._formatting(candlesticks_df, macd)
          return formatted_macd
  
      def _required_candlesticks_count(self, count):
          return self._bounded_count(count) + self._long + self._signal - 2
  
      @staticmethod
      def _formatting(candlesticks_df, macd):
          macd_with_time = pd.concat([candlesticks_df['time'], macd], axis=1)
          macd_with_time.dropna(inplace=True)
          dict_macd = macd_with_time.astype(object).to_dict(orient='records')
          return dict_macd
  
new_contents: import pandas as pd
  from .indicator import Indicator
  
  
  class MACD(Indicator):
      _NAME = 'macd'
  
      def __init__(self, currency_pair='btc_jpy', period='1d', short=12, long=26, signal=9):
          super().__init__(currency_pair, period)
          self._short = self._bounded_length(short)
          self._long = self._bounded_length(long)
          self._signal = self._bounded_length(signal)
  
      def request_data(self, count=100, to_epoch_time=None):
          candlesticks_df = self._get_candlesticks_df(count, to_epoch_time)
          macd = self._exec_talib_func(candlesticks_df,
                                       price='close',
                                       fastperiod=self._short,
                                       slowperiod=self._long,
                                       signalperiod=self._signal)
  
          formatted_macd = self._formatting(candlesticks_df, macd)
          return formatted_macd
  
      def _required_candlesticks_count(self, count):
          return self._bounded_count(count) + self._long + self._signal - 2
  
      @staticmethod
      def _formatting(candlesticks_df, macd):
          macd_with_time = pd.concat([candlesticks_df['time'], macd], axis=1)
          macd_with_time.dropna(inplace=True)
          dict_macd = macd_with_time.astype(object).to_dict(orient='records')
          return dict_macd
  
subject: Fix pep8