code: def ch_dtype_from_numpy(dtype):
      return ch.from_numpy(np.zeros((), dtype=dtype)).dtype
  
file_path: ffcv/ffcv/transforms/normalize.py
imports: from collections.abc import Sequence
  from typing import Tuple
  import numpy
  import torch
  from numpy import dtype
  from numpy.random import rand
  from dataclasses import replace
  from typing import Callable, Optional, Tuple
  from ..pipeline.allocation_query import AllocationQuery
  from ..pipeline.operation import Operation
  from ..pipeline.state import State
  from ..pipeline.compiler import Compiler
label_desc: Use image node_id 1 for calling a global function with example usage: ch_dtype_from_numpy(dtype) and returns: ch