class_docstr: A dictionary-like object that records indices of items actually accessed
  from a list.
class_docstr_tok: ["A","dictionary-like","object","that","records","indices","of","items","actually","accessed","from","a","list","."]
code: def __init__(self, lst):
      self.l = lst
      self.d = {id(v): i for i, v in enumerate(lst)}
      self.s = set()
  
imports: from fontTools.misc.timeTools import timestampNow
  from fontTools.ttLib.tables.DefaultTable import DefaultTable
  from functools import reduce
  import operator
  import logging
label_desc: Use image node_id 1 to create a new AttendanceRecordingIdentityDict object from inherited base classes: object with example: obj = AttendanceRecordingIdentityDict(lst)