class_docstr: Reader class for a scp file of numpy file.
  
  Examples:
      key1 /some/path/a.npy
      key2 /some/path/b.npy
      key3 /some/path/c.npy
      key4 /some/path/d.npy
      ...
  
      >>> reader = NpyScpReader('npy.scp')
      >>> array = reader['key1']
code: def __init__(self, fname: Union[Path, str]):
      assert check_argument_types()
      self.fname = Path(fname)
      self.data = read_2columns_text(fname)
  
imports: import collections.abc
  from pathlib import Path
  from typing import Union
  import numpy
  from typeguard import check_argument_types
  from espnet2.fileio.read_text import read_2columns_text
label_desc: Use image node_id 1 to create a new NpyScpReader object from inherited base classes: collections.abc with example: obj = NpyScpReader(fname)