code: def assertNotZero(self, x):
      assert isinstance(x, float)
      super().assertNotEqual(x, 0.0, atol=0, rtol=0)
  
imports: import torch
  from torch._inductor import metrics
  from torch._inductor.compile_fx import compile_fx, count_bytes_inner
  from torch.testing._internal.common_utils import TestCase
  from torch.testing._internal.inductor_utils import HAS_CUDA
label_desc: Use image node_id 2 for calling the TestCase obj's underlying member method code with example usage: obj.assertNotZero(x) without return types