code: def x_disc():
      srand()
      x = np.random.random(size=(3, 5)) ** 2
      x /= x.sum(axis=0, keepdims=True)
      return x
  
imports: import numpy
  import pytest
  from test_core import srand
  import librosa
label_desc: Use image node_id 10 for calling a global function with example usage: x_disc() and returns: x