| # Copyright 2020 The HuggingFace Team. All rights reserved. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| import re | |
| from filelock import FileLock | |
| try: | |
| import nltk | |
| NLTK_AVAILABLE = True | |
| except (ImportError, ModuleNotFoundError): | |
| NLTK_AVAILABLE = False | |
| if NLTK_AVAILABLE: | |
| with FileLock(".lock") as lock: | |
| nltk.download("punkt", quiet=True) | |
| def add_newline_to_end_of_each_sentence(x: str) -> str: | |
| """This was added to get rougeLsum scores matching published rougeL scores for BART and PEGASUS.""" | |
| re.sub("<n>", "", x) # remove pegasus newline char | |
| assert ( | |
| NLTK_AVAILABLE | |
| ), "nltk must be installed to separate newlines between sentences. (pip install nltk)" | |
| return "\n".join(nltk.sent_tokenize(x)) | |