code: def assertFailure_fast(f):
      """A Decorator to handle the test cases that are failing when
      PYTENSOR_FLAGS =cycle_detection='fast'.
      """
      if pytensor.config.cycle_detection == "fast":
  
          def test_with_assert(*args, **kwargs):
              with pytest.raises(Exception):
                  f(*args, **kwargs)
  
          return test_with_assert
      else:
          return f
  
imports: import logging
  import sys
  from copy import copy, deepcopy
  from functools import wraps
  import numpy
  import pytest
  import pytensor
  from pytensor.compile.debugmode import str_diagnostic
  from pytensor.configdefaults import config
  from pytensor.gradient import verify_grad
  from pytensor.tensor.basic import as_tensor_variable
  from pytensor.tensor.math import _allclose
  from pytensor.tensor.math import add
label_desc: Use image node_id 4 for calling a global function with example usage: assertFailure_fast(f) and returns: test_with_assert, f