code: def load_wav_scp(wav_scp_file):
      """Return dictionary { rec: wav_rxfilename }."""
      lines = [
          line.strip().split(None, 1) for line in open(wav_scp_file)
      ]
      return {x[0]: x[1] for x in lines}
  
imports: from __future__ import print_function
  import io
  import os
  import subprocess
  import sys
  from functools import lru_cache
  import numpy
  import soundfile
label_desc: Use image node_id 4 for calling a global function with example usage: load_wav_scp(wav_scp_file) and returns: unknown