code: def __delattr__(self, name: str):
      if name in self._meters:
          del self._meters[name]
      elif name in self._meterdicts:
          del self._meterdicts[name]
      else:
          object.__delattr__(name)
  
imports: from __future__ import annotations
  import warnings
  import json
  from typing import Dict, Union, Optional
  from collections import OrderedDict
  from .meters import Meter
label_desc: Use image node_id 6 for calling the MeterDict obj's underlying member method code with example usage: obj.__delattr__(name) without return types