code: def __init__(self, npz_file):
      self.npz_file = npz_file
  
file_path: cupy/cupy/_io/npz.py
imports: import warnings
  import numpy
  import cupy
label_desc: Use image node_id 1 to create a new NpzFile object from inherited base classes: object with example: obj = NpzFile(npz_file)