code: def testBlockingTakeMany(self):
      with self.cached_session() as sess:
          b = data_flow_ops.Barrier(dtypes.float32, shapes=())
          keys = [str(x).encode("ascii") for x in range(10)]
          values = [float(x) for x in range(10)]
          insert_ops = [
              b.insert_many(0, [k], [v]) for k, v in zip(keys, values)
          ]
          take_t = b.take_many(10)
  
          def take():
              indices_val, keys_val, values_val = sess.run(
                  [take_t[0], take_t[1], take_t[2][0]]
              )
              self.assertAllEqual(
                  indices_val,
                  [int(x.decode("ascii")) - 2**63 for x in keys_val],
              )
              self.assertItemsEqual(
                  zip(keys, values), zip(keys_val, values_val)
              )
  
          t = self.checkedThread(target=take)
          t.start()
          time.sleep(0.1)
          for insert_op in insert_ops:
              insert_op.run()
          t.join()
  
imports: import time
  import numpy
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 10 for calling the BarrierTest obj's underlying member method code with example usage: obj.testBlockingTakeMany() without return types