code: def low_precision_init(target_dtype: torch.dtype = torch.float16):
      dtype = torch.get_default_dtype()
      try:
          torch.set_default_dtype(target_dtype)
          yield
      finally:
          torch.set_default_dtype(dtype)
  
imports: from contextlib import contextmanager
  import torch
  import torch.nn
label_desc: Use image node_id 1 for calling a global function with example usage: low_precision_init(target_dtype) without return types