code: def __init__(self, dt: DType):
      super().__init__(dt.priority, dt.itemsize, dt.name, dt.fmt, dt.sz)
  
imports: from typing import Final, Optional, ClassVar, Set, Tuple, Dict
  from dataclasses import dataclass
  import numpy
  import functools
label_desc: Use image node_id 1 to create a new PtrDType object from inherited base classes: DType with example: obj = PtrDType(dt)