code: def enclosing_tpu_context():
      """Returns the TPUReplicateContext, which exists inside a tpu.rewrite()."""
      return enclosing_tpu_context_and_graph()[0]
  
imports: import contextlib
  from tensorflow.python.distribute import packed_distributed_variable
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.tpu import tpu_replication
label_desc: Use image node_id 1 for calling a global function with example usage: enclosing_tpu_context() and returns: enclosing_tpu_context_and_graph