code: def digest(text):
      return hashlib.md5(bytes(text, "utf-8")).hexdigest()
  
imports: import hashlib
  import os
  import pytest
  from funcy import first
  from dvc.exceptions import DvcException
  from dvc.utils.fs import remove
label_desc: Use image node_id 1 for calling a global function with example usage: digest(text) and returns: hashlib