code: def testPeek(self):
      with ops.Graph().as_default() as G:
          with ops.device("/cpu:0"):
              x = array_ops.placeholder(dtypes.int32, name="x")
              p = array_ops.placeholder(dtypes.int32, name="p")
          with ops.device(test.gpu_device_name()):
              stager = data_flow_ops.StagingArea(
                  [
                      dtypes.int32,
                  ],
                  shapes=[[]],
              )
              stage = stager.put([x])
              peek = stager.peek(p)
              ret = stager.get()
  
      G.finalize()
  
      with self.session(graph=G) as sess:
          for i in range(10):
              sess.run(stage, feed_dict={x: i})
  
          for i in range(10):
              self.assertTrue(sess.run(peek, feed_dict={p: i}) == [i])
  
imports: import queue
  import threading
  import numpy
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 5 for calling the StageTest obj's underlying member method code with example usage: obj.testPeek() without return types