code: def flatten(a):
      """
      Recursively flatten tuple, list and set in a list.
  
      """
      if isinstance(a, (tuple, list, set)):
          l = []
          for item in a:
              l.extend(flatten(item))
          return l
      else:
          return [a]
  
imports: import hashlib
  import logging
  import os
  import struct
  import subprocess
  import sys
  from collections import OrderedDict
  from collections.abc import Callable
  from functools import partial
label_desc: Use image node_id 15 for calling a global function with example usage: flatten(a) and returns: l, list