code: def enable_validation(is_validate):
      global _VALIDATION_ENABLED
      _VALIDATION_ENABLED = is_validate
  
imports: import math
  import numbers
  from collections import Counter, defaultdict
  from contextlib import contextmanager
  import torch
  from opt_einsum import shared_intermediates
  from opt_einsum.sharing import count_cached_ops
  from pyro.distributions.util import is_identically_zero
  from pyro.ops import packed
  from pyro.ops.einsum.adjoint import require_backward
  from pyro.ops.rings import MarginalRing
  from pyro.poutine.util import site_is_subsample
  from ..None import settings
label_desc: Use image node_id 1 for calling a global function with example usage: enable_validation(is_validate) without return types