code: def write_idct_matrix(feat_dim, cepstral_lifter, file_path):
      # generate the IDCT matrix and write to the file
      idct_matrix = compute_idct_matrix(
          feat_dim, feat_dim, cepstral_lifter
      )
      # append a zero column to the matrix, this is the bias of the fixed affine
      # component
      for k in range(0, feat_dim):
          idct_matrix[k].append(0)
      write_kaldi_matrix(file_path, idct_matrix)
  
imports: from __future__ import print_function
  from __future__ import division
  import argparse
  import logging
  import math
  import os
  import subprocess
  import sys
  import threading
label_desc: Use image node_id 25 for calling a global function with example usage: write_idct_matrix(feat_dim, cepstral_lifter, file_path) without return types