code: def yesterdayDF(symbol, token='', version=''):
      '''This returns previous day adjusted price data for one or more stocks
  
      https://iexcloud.io/docs/api/#previous-day-prices
      Available after 4am ET Tue-Sat
  
      Args:
          symbol (string); Ticker to request
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result
      '''
      y = yesterday(symbol, token, version)
      if y:
          df = pd.io.json.json_normalize(y)
          _toDatetime(df)
          _reindex(df, 'symbol')
      else:
          df = pd.DataFrame()
      return df yesterdayDF(symbol, token='', version=''):
      '''This returns previous day adjusted price data for one or more stocks
  
      https://iexcloud.io/docs/api/#previous-day-prices
      Available after 4am ET Tue-Sat
  
      Args:
          symbol (string); Ticker to request
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result
      '''
      y = yesterday(symbol, token, version)
      if y:
          df = pd.io.json.json_normalize(y)
          _toDatetime(df)
          _reindex(df, 'symbol')
      else:
          df = pd.DataFrame()
      return df
docs: This returns previous day adjusted price data for one or more stocks
  
      https://iexcloud.io/docs/api/#previous-day-prices
      Available after 4am ET Tue-Sat
  
      Args:
          symbol (string); Ticker to request
          token (string); Access token
          version (string); API version
  
      Returns:
          DataFrame: result