code: def __init__(self, default_dtype: Optional[torch.dtype] = None):
      self._old_default_dtype = None
      self._default_dtype = default_dtype
  
file_path: ColossalAI/colossalai/utils/model/utils.py
imports: import functools
  from typing import Optional
  import torch
label_desc: Use image node_id 1 to create a new InsertPostInitMethodToModuleSubClasses object from inherited base classes: object with example: obj = InsertPostInitMethodToModuleSubClasses(default_dtype)