code: def msg():
      """Sanitize messages and add custom failure explanation"""
      return SanitizedString(_sanitize_message)
  
imports: import contextlib
  import difflib
  import gc
  import multiprocessing
  import os
  import re
  import textwrap
  import traceback
  import pytest
label_desc: Use image node_id 10 for calling a global function with example usage: msg() and returns: SanitizedString