unified tokenizer api and serialization + tests

examples/utils_glue.py

@@ -396,7 +396,7 @@ def convert_examples_to_features(examples, label_list, max_seq_length,
                                  mask_padding_with_zero=True):
     """ Loads a data file into a list of `InputBatch`s
         `cls_token_at_end` define the location of the CLS token:
-            - False (BERT pattern): [CLS] + A + [SEP] + B + [SEP]
+            - False (Default, BERT/XLM pattern): [CLS] + A + [SEP] + B + [SEP]
             - True (XLNet/GPT pattern): A + [SEP] + B + [SEP] + [CLS]
         `cls_token_segment_id` define the segment id associated to the CLS token (0 for BERT, 2 for XLNet)
     """
@@ -489,8 +489,7 @@ def convert_examples_to_features(examples, label_list, max_seq_length,
                     [str(x) for x in tokens]))
             logger.info("input_ids: %s" % " ".join([str(x) for x in input_ids]))
             logger.info("input_mask: %s" % " ".join([str(x) for x in input_mask]))
-            logger.info(
-                    "segment_ids: %s" % " ".join([str(x) for x in segment_ids]))
+            logger.info("segment_ids: %s" % " ".join([str(x) for x in segment_ids]))
             logger.info("label: %s (id = %d)" % (example.label, label_id))
 
         features.append(