code: def test_dtype(self):
      y = logspace(0, 6, dtype="float32")
      assert_equal(y.dtype, dtype("float32"))
      y = logspace(0, 6, dtype="float64")
      assert_equal(y.dtype, dtype("float64"))
      y = logspace(0, 6, dtype="int32")
      assert_equal(y.dtype, dtype("int32"))
  
imports: import sys
  import pytest
  import numpy
  from numpy import logspace, linspace, geomspace, dtype, array, arange, isnan, ndarray, sqrt, nextafter, stack, errstate
  from numpy._core import sctypes
  from numpy._core.function_base import add_newdoc
  from numpy.testing import assert_, assert_equal, assert_raises, assert_array_equal, assert_allclose, IS_PYPY
label_desc: Use image node_id 5 for calling the TestLogspace obj's underlying member method code with example usage: obj.test_dtype() without return types