code: def __init__(self, maxLen=None):
      super(MemFeed, self).__init__(maxLen)
  
      self.__values = []
      self.__nextIdx = 0
  
file_path: pyalgotrade/pyalgotrade/feed/memfeed.py
imports: from pyalgotrade import feed
  from pyalgotrade import dataseries
label_desc: Use image node_id 1 to create a new MemFeed object from inherited base classes: feed with example: obj = MemFeed(maxLen)