code: def update_scale_zp(self):
      for _, ts in self._target_spaces.items():
          for _, target_space in ts.items():
              scale, zero_point = compute_scale_zp(target_space)  # type: ignore
              target_space.scale, target_space.zero_point = (
                  scale,
                  zero_point,
              )
  
imports: from __future__ import annotations
  from typing import List, Dict, Union, overload
  import torch
  from torch import Tensor
  from ..base.compressor import Compressor, Quantizer
  from ..base.wrapper import ModuleWrapper
  from ..base.target_space import QuantizationTargetSpace
  from ..utils import Evaluator, _EVALUATOR_DOCSTRING
label_desc: Use image node_id 8 for calling the PtqQuantizer obj's underlying member method code with example usage: obj.update_scale_zp() without return types