code: def test_mixed_type(self):
      g = r_[10.1, 1:10]
      assert_(g.dtype == "f8")
  
imports: import functools
  from unittest import expectedFailure, skipIf
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, TEST_WITH_TORCHDYNAMO, TestCase, xpassIfTorchDynamo
label_desc: Use image node_id 2 for calling the TestConcatenator obj's underlying member method code with example usage: obj.test_mixed_type() without return types