code: def __str__(self):
      s = super().__str__()
      return f"{s} [stderr: {self.stderr!r}]"
  
imports: import errno
  import logging
  import os
  import platform
  import re
  import subprocess
  import sys
  import typing
  from .None import tools
label_desc: Use image node_id 1 for calling the CalledProcessError obj's underlying member method code with example usage: obj.__str__() and returns: s, str, self, str