class_docstr: Wrapper around python map() output object that preserves the original collection length
  by implementing __len__.
code: def __iter__(self):
      self.mapobj = self.mapobj.__iter__()
      return self
  
imports: import os
  import sys
  import time
  import heapq
  import semver
  import random
  from multiprocessing import Pool
  from collections import namedtuple
label_desc: Use image node_id 2 for calling the LenMap obj's underlying member method code with example usage: obj.__iter__() and returns: self