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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _parse_example(serialized_example):
 """Return inputs and targets Tensors from a serialized tf.Example."""

  data_fields = {
      "inputs": tf.VarLenFeature(tf.int64),
      "targets": tf.VarLenFeature(tf.int64)
  }
  parsed = tf.parse_single_example(serialized_example, data_fields)
  inputs = tf.sparse_tensor_to_dense(parsed["inputs"])
  targets = tf.sparse_tensor_to_dense(parsed["targets"])
  return inputs, targets