class_docstr: Writer 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
      ...
  
      >>> writer = NpyScpWriter('./data/', './data/feat.scp')
      >>> writer['aa'] = numpy_array
      >>> writer['bb'] = numpy_array
code: def close(self):
      self.fscp.close()
  
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 6 for calling the NpyScpWriter obj's underlying member method code with example usage: obj.close() without return types