code: def test_type(self):
      # Check the type of the returned histogram
      a = np.arange(10) + 0.5
      h, b = histogram(a)
      assert_(np.issubdtype(h.dtype, np.integer))
  
      h, b = histogram(a, density=True)
      assert_(np.issubdtype(h.dtype, np.floating))
  
      h, b = histogram(a, weights=np.ones(10, int))
      assert_(np.issubdtype(h.dtype, np.integer))
  
      h, b = histogram(a, weights=np.ones(10, float))
      assert_(np.issubdtype(h.dtype, np.floating))
  
imports: import numpy
  from numpy.lib.histograms import histogram, histogramdd, histogram_bin_edges
  from numpy.testing import assert_, assert_equal, assert_array_equal, assert_almost_equal, assert_array_almost_equal, assert_raises, assert_allclose, assert_array_max_ulp, assert_raises_regex, suppress_warnings
  from numpy.testing._private.utils import requires_memory
  import pytest
label_desc: Use image node_id 8 for calling the TestHistogram obj's underlying member method code with example usage: obj.test_type() without return types