code: def get_hash_hex(byte_str):
      m = hashlib.new("sha256")
  
      m.update(byte_str)
  
      return m.hexdigest()
  
imports: import io
  import os
  from ipywidgets import Image
  import hashlib
  import pkgutil
  import tempfile
  from contextlib import contextmanager
label_desc: Use image node_id 18 for calling a global function with example usage: get_hash_hex(byte_str) and returns: m