code: def device_scope(device_name):
      if isinstance(device_name, str):
          # We support string value like "cpu:0", "gpu:1", etc.
          device_name = device_name.lower()
          jax_device = distribution_lib._to_jax_device(device_name)
      elif not isinstance(device_name, jax.Device):
          raise ValueError(
              "Invalid value for argument `device_name`. "
              "Expected a string like 'gpu:0' or a `jax.Device` instance. "
              f"Received: device_name='{device_name}'"
          )
      else:
          jax_device = device_name
      return jax.default_device(jax_device)
  
imports: import types
  import jax
  import jax.numpy
  import numpy
  import tree
  from jax.tree_util import Partial
  from keras.backend.common import KerasVariable
  from keras.backend.common import global_state
  from keras.backend.common import standardize_dtype
  from keras.backend.common.keras_tensor import KerasTensor
  from keras.backend.common.stateless_scope import StatelessScope
  from keras.backend.jax import distribution_lib
  from keras.utils.nest import pack_sequence_as
label_desc: Use image node_id 17 for calling a global function with example usage: device_scope(device_name) and returns: jax