code: def prepare_for_reraise(error, exc_info=None):
      
      if not hasattr(error, "_type_"):
          if exc_info is None:
              exc_info = sys.exc_info()
          error._type_ = exc_info[0]
          error._traceback = exc_info[2]
      return error
docs: Prepares the exception for re-raising with reraise method.
  
      This method attaches type and traceback info to the error object
      so that reraise can properly reraise it using this info.