class_docstr: Collection that lazily combines sorted collections in an interleaving fashion.
  During iteration the next smallest element from all the sorted collections is always picked.
  The collections must support iter() and len().
code: def __len__(self):
      return self.len
  
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 3 for calling the Interleaved obj's underlying member method code with example usage: obj.__len__() and returns: self