code: def __setUpTrakers(self):
          ''' set symbols '''
          for symbol in self.symbols:
              self.__trakers[symbol]=OneTraker(symbol, self, self.buyingRatiof __setUpTrakers(self):
          ''' set symbols '''
          for symbol in self.symbols:
              self.__trakers[symbol]=OneTraker(symbol, self, self.buyingRatio)
docs: set symbols