code: def _flip_option(options, option_name):
      try:
          option_value = options[option_name]
      except KeyError:
          pass
      else:
          if isinstance(option_value, torch.Tensor):
              options[option_name] = -option_value
  
imports: from enum import Enum
  import math
  import numpy
  import torch
  import warnings
  from .event_handling import combine_event_functions
label_desc: Use image node_id 19 for calling a global function with example usage: _flip_option(options, option_name) without return types