class_docstr: Wrapper class used to load operators from either local cache or a remote
  location.
  
  Args:
      cache_path: (`str`)
          Local cache path to use. If not specified, it will default to
          `$HOME/.towhee/operators`.
class_docstr_tok: ["Wrapper","class","used","to","load","operators","from","either","local","cache","or","a","remote","location",".","Args",":","cache_path",":","(","`","str","`",")","Local","cache","path","to","use",".","If","not","specified",",","it","will","default","to","`","$","HOME\/.towhee\/operators","`","."]
code: def _instance_operator(
      self, op, arg: List[Any], kws: Dict[str, Any]
  ) -> Operator:
      if arg is None:
          arg = ()
      return op(*arg, **kws) if kws is not None else op(*arg)
  
imports: import importlib
  import sys
  import subprocess
  from pathlib import Path
  from typing import Any, List, Dict, Union
  import re
  import traceback
  import pkg_resources
  import hashlib
  from towhee.operator import Operator
  from towhee.operator.nop import NOPNodeOperator
  from towhee.hub import get_operator
  from towhee.runtime.constants import OPName
  from towhee.utils.log import engine_log
  from .operator_registry import OperatorRegistry
label_desc: Use image node_id 8 for calling the OperatorLoader obj's underlying member method code with example usage: obj._instance_operator(op, arg, kws) and returns: unknown