code: def test_asym(self):
      x = array([1, 1, 2, 3, 4, 4, 4, 5])
      y = array([1, 3, 2, 0, 1, 2, 3, 4])
      H, xed, yed = histogram2d(
          x, y, (6, 5), range=[[0, 6], [0, 5]], density=True
      )
      answer = array(
          [
              [0.0, 0, 0, 0, 0],
              [0, 1, 0, 1, 0],
              [0, 0, 1, 0, 0],
              [1, 0, 0, 0, 0],
              [0, 1, 1, 1, 0],
              [0, 0, 0, 0, 1],
          ]
      )
      assert_array_almost_equal(H, answer / 8.0, 3)
      assert_array_equal(xed, np.linspace(0, 6, 7))
      assert_array_equal(yed, np.linspace(0, 5, 6))
  
imports: from numpy.testing import assert_equal, assert_array_equal, assert_array_max_ulp, assert_array_almost_equal, assert_raises, assert_
  from numpy import arange, add, fliplr, flipud, zeros, ones, eye, array, diag, histogram2d, tri, mask_indices, triu_indices, triu_indices_from, tril_indices, tril_indices_from, vander
  import numpy
  import pytest
label_desc: Use image node_id 2 for calling the TestHistogram2d obj's underlying member method code with example usage: obj.test_asym() without return types