code: def mfcc(ysr):
      y, sr = ysr
      return librosa.feature.mfcc(y=y, sr=sr)
  
imports: from typing import Union
  import warnings
  import os
  import numpy
  import scipy
  from scipy.spatial.distance import cdist, pdist, squareform
  import pytest
  from test_core import srand
  import librosa
label_desc: Use image node_id 35 for calling a global function with example usage: mfcc(ysr) and returns: librosa