code: def test_tensor_ops():
      pi = 3.141592654
      X = Uniform(0, 1).expand([5, 5]).rv
      a = torch.tensor([[1, 2, 3, 4, 5]])
      b = a.T
      X = abs(pi * (-X + a - 3 * b))
      x = X.dist.sample()
      assert x.shape == (5, 5)
      assert (x >= 0).all().item()
  
file_path: pyro/tests/contrib/randomvariable/test_random_variable.py
imports: import math
  import torch
  from pyro.distributions import Uniform
label_desc: Use image node_id 7 for calling a global function with example usage: test_tensor_ops() without return types