code: def tearDown(self):
      no_value = object()
      for name, orig_value in self._options_backup.items():
          if getattr(Options, name, no_value) != orig_value:
              setattr(Options, name, orig_value)
  
file_path: catboost/contrib/tools/cython/Cython/Compiler/Tests/TestCmdLine.py
imports: import sys
  import re
  from unittest import TestCase
  from ..None import Options
  from ..CmdLine import parse_command_line
label_desc: Use image node_id 2 for calling the CmdLineParserTest obj's underlying member method code with example usage: obj.tearDown() without return types