Py3 cleanup for nlp/

PiperOrigin-RevId: 339071563

official/nlp/transformer/compute_bleu.py

@@ -18,10 +18,6 @@ Source:
 https://github.com/tensorflow/tensor2tensor/blob/master/tensor2tensor/utils/bleu_hook.py
 """
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import re
 import sys
 import unicodedata

official/nlp/transformer/data_download.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Download and preprocess WMT17 ende training and evaluation datasets."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import os
 import random
 import tarfile

official/nlp/transformer/data_pipeline.py

@@ -47,10 +47,6 @@ Two things to note in the pipeline:
    in the order of the examples.
 """
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import os
 
 from absl import logging

official/nlp/transformer/embedding_layer.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Implementation of embedding layer with shared weights."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import tensorflow as tf
 
 

official/nlp/transformer/ffn_layer.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Implementation of fully connected network."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import tensorflow as tf
 
 

official/nlp/transformer/metrics.py

@@ -22,9 +22,6 @@ Metrics:
  - ROUGE score. Source:
      https://github.com/tensorflow/tensor2tensor/blob/master/tensor2tensor/utils/rouge.py
 """
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
 
 import functools
 

official/nlp/transformer/misc.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Misc for Transformer."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 # pylint: disable=g-bad-import-order
 
 from absl import flags

official/nlp/transformer/model_utils.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Transformer model helper methods."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import math
 
 import numpy as np

official/nlp/transformer/model_utils_test.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Test Transformer model helper methods."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import tensorflow as tf
 
 from official.nlp.transformer import model_utils

official/nlp/transformer/optimizer.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Optimizer from addons and learning rate scheduler."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import tensorflow as tf
 
 

official/nlp/transformer/transformer.py

@@ -17,9 +17,6 @@
 Model paper: https://arxiv.org/pdf/1706.03762.pdf
 Transformer model code source: https://github.com/tensorflow/tensor2tensor
 """
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
 
 import tensorflow as tf
 from official.nlp.modeling.layers import position_embedding

official/nlp/transformer/transformer_layers_test.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Tests for layers in Transformer."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import tensorflow as tf
 
 from official.nlp.transformer import attention_layer

official/nlp/transformer/transformer_main.py

@@ -17,9 +17,6 @@
 See README for description of setting the training schedule and evaluating the
 BLEU score.
 """
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
 
 import os
 import tempfile

official/nlp/transformer/transformer_main_test.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Test Transformer model."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import os
 import re
 import sys

official/nlp/transformer/transformer_test.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Test Transformer model."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 import tensorflow as tf
 
 from official.nlp.transformer import model_params

official/nlp/transformer/translate.py

@@ -14,10 +14,6 @@
 # ==============================================================================
 """Translate text or files using trained transformer model."""
 
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
 # Import libraries
 from absl import logging
 import numpy as np

official/nlp/xlnet/common_flags.py

@@ -13,10 +13,6 @@
 # limitations under the License.
 # ==============================================================================
 """Common flags used in XLNet model."""
-from __future__ import absolute_import
-from __future__ import division
-# from __future__ import google_type_annotations
-from __future__ import print_function
 
 from absl import flags
 

official/nlp/xlnet/data_utils.py

@@ -14,11 +14,6 @@
 # ==============================================================================
 """Utilities used for data preparation."""
 
-from __future__ import absolute_import
-from __future__ import division
-# from __future__ import google_type_annotations
-from __future__ import print_function
-
 import collections
 import json
 import os

official/nlp/xlnet/optimization.py

@@ -13,10 +13,6 @@
 # limitations under the License.
 # ==============================================================================
 """Functions and classes related to optimization (weight updates)."""
-from __future__ import absolute_import
-from __future__ import division
-# from __future__ import google_type_annotations
-from __future__ import print_function
 
 from absl import logging
 import tensorflow as tf

official/nlp/xlnet/preprocess_classification_data.py

@@ -13,9 +13,6 @@
 # limitations under the License.
 # ==============================================================================
 """Script to pre-process classification data into tfrecords."""
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
 
 import collections
 import csv