code: def local_device_count(*args, **kwargs):
      """Return the number of accelerators (GPUs or TPUs) available on this host."""
      return backend()["local_device_count"](*args, **kwargs)
  
imports: import contextlib
  import enum
  import gin
  from trax.fastmath.jax import JAX_BACKEND
  from trax.fastmath.numpy import NUMPY_BACKEND
  from trax.fastmath.tf import TF_BACKEND
label_desc: Use image node_id 39 for calling a global function with example usage: local_device_count() and returns: backend