code: def eof(self):
      ret = True
      # Check if there is at least one more bar to return.
      for instrument, bars in six.iteritems(self.__bars):
          nextPos = self.__nextPos[instrument]
          if nextPos < len(bars):
              ret = False
              break
      return ret
  
file_path: pyalgotrade/pyalgotrade/barfeed/membf.py
imports: import six
  from pyalgotrade import barfeed
  from pyalgotrade import bar
  from pyalgotrade import utils
label_desc: Use image node_id 8 for calling the BarFeed obj's underlying member method code with example usage: obj.eof() and returns: ret