code: def testTakeManySmallBatch(self):
      with self.cached_session() as sess:
          b = data_flow_ops.Barrier(
              (dtypes.float32, dtypes.float32),
              shapes=((), ()),
              name="B",
          )
          size_t = b.ready_size()
          size_i = b.incomplete_size()
          keys = [b"a", b"b", b"c", b"d"]
          values_0 = [10.0, 20.0, 30.0, 40.0]
          values_1 = [100.0, 200.0, 300.0, 400.0]
          insert_0_op = b.insert_many(0, keys, values_0)
          # Split adding of the second component into two independent operations.
          # After insert_1_1_op, we'll have two ready elements in the barrier,
          # 2 will still be incomplete.
          insert_1_1_op = b.insert_many(
              1, keys[0:2], values_1[0:2]
          )  # add "a", "b"
          insert_1_2_op = b.insert_many(
              1, keys[2:3], values_1[2:3]
          )  # add "c"
          insert_1_3_op = b.insert_many(
              1, keys[3:], values_1[3:]
          )  # add "d"
          insert_empty_op = b.insert_many(0, [], [])
          close_op = b.close()
          close_op_final = b.close(cancel_pending_enqueues=True)
          index_t, key_t, value_list_t = b.take_many(
              3, allow_small_batch=True
          )
          insert_0_op.run()
          insert_1_1_op.run()
          close_op.run()
          # Now we have a closed barrier with 2 ready elements. Running take_t
          # should return a reduced batch with 2 elements only.
          self.assertEqual(
              self.evaluate(size_i), [2]
          )  # assert that incomplete size = 2
          self.assertEqual(
              self.evaluate(size_t), [2]
          )  # assert that ready size = 2
          _, keys_val, values_0_val, values_1_val = sess.run(
              [index_t, key_t, value_list_t[0], value_list_t[1]]
          )
          # Check that correct values have been returned.
          for k, v0, v1 in zip(keys[0:2], values_0[0:2], values_1[0:2]):
              idx = keys_val.tolist().index(k)
              self.assertEqual(values_0_val[idx], v0)
              self.assertEqual(values_1_val[idx], v1)
  
          # The next insert completes the element with key "c". The next take_t
          # should return a batch with just 1 element.
          insert_1_2_op.run()
          self.assertEqual(
              self.evaluate(size_i), [1]
          )  # assert that incomplete size = 1
          self.assertEqual(
              self.evaluate(size_t), [1]
          )  # assert that ready size = 1
          _, keys_val, values_0_val, values_1_val = sess.run(
              [index_t, key_t, value_list_t[0], value_list_t[1]]
          )
          # Check that correct values have been returned.
          for k, v0, v1 in zip(keys[2:3], values_0[2:3], values_1[2:3]):
              idx = keys_val.tolist().index(k)
              self.assertEqual(values_0_val[idx], v0)
              self.assertEqual(values_1_val[idx], v1)
  
          # Adding nothing ought to work, even if the barrier is closed.
          insert_empty_op.run()
  
          # currently keys "a" and "b" are not in the barrier, adding them
          # again after it has been closed, ought to cause failure.
          with self.assertRaisesOpError("is closed"):
              insert_1_1_op.run()
          close_op_final.run()
  
          # These ops should fail because the barrier has now been closed with
          # cancel_pending_enqueues = True.
          with self.assertRaisesOpError("is closed"):
              insert_empty_op.run()
          with self.assertRaisesOpError("is closed"):
              insert_1_3_op.run()
  
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 6 for calling the BarrierTest obj's underlying member method code with example usage: obj.testTakeManySmallBatch() without return types