code: def test_entropy_base(self):
      pk = cupy.ones(16, float)
      s = stats.entropy(pk, base=2.0)
      assert abs(s - 4.0) < 1.0e-5
  
      qk = cupy.ones(16, float)
      qk[:8] = 2.0
      s = stats.entropy(pk, qk)
      s2 = stats.entropy(pk, qk, base=2.0)
      assert abs(s / s2 - math.log(2.0)) < 1.0e-5
  
imports: import math
  import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
  import cupyx.scipy.stats
  from cupyx.scipy import stats
  from cupyx.scipy.stats import _distributions
label_desc: Use image node_id 2 for calling the TestEntropyBasic obj's underlying member method code with example usage: obj.test_entropy_base() without return types