code: def __init__(self, tickers, session=None):
      tickers = (
          tickers
          if isinstance(tickers, list)
          else tickers.replace(",", " ").split()
      )
      self.symbols = [ticker.upper() for ticker in tickers]
      self.tickers = {
          ticker: Ticker(ticker, session=session)
          for ticker in self.symbols
      }
  
imports: from __future__ import print_function
  from .None import Ticker, multi
label_desc: Use image node_id 2 to create a new Tickers object  with example: obj = Tickers(tickers, session)