Update dataset.py

dataset.py

@@ -1,22 +1,23 @@
-from datasets import Dataset, DatasetInfo, load_dataset_builder, GeneratorBasedBuilder
+import os
+import csv
+from datasets import Dataset, DatasetInfo, Features, Value, Sequence, GeneratorBasedBuilder, DownloadManager, Split
 
 class FreshWikiDataset(GeneratorBasedBuilder):
     def _info(self):
         return DatasetInfo(
             description="The FreshWiki Dataset is a collection of high-quality Wikipedia articles focusing on the most-edited pages from February 2022 to September 2023.",
-            features=datasets.Features({
-                "json_file": datasets.Value("string"),
-                "txt_file": datasets.Value("string"),
-                "topics": datasets.Sequence(datasets.Value("string")),
+            features=Features({
+                "json_file": Value("string"),
+                "txt_file": Value("string"),
+                "topic": Value("string"),
             }),
         )
 
-    def _split_generators(self, dl_manager):
-        # Access the folder where all files are stored
+    def _split_generators(self, dl_manager: DownloadManager):
         data_dir = dl_manager.download_and_extract("https://huggingface.co/datasets/EchoShao8899/FreshWiki")
         return [
-            datasets.SplitGenerator(
-                name=datasets.Split.TRAIN,
+            Split(
+                name=Split.TRAIN,
                 gen_kwargs={
                     "json_files": os.path.join(data_dir, "json"),
                     "txt_files": os.path.join(data_dir, "txt"),
@@ -26,13 +27,20 @@ class FreshWikiDataset(GeneratorBasedBuilder):
         ]
 
     def _generate_examples(self, json_files, txt_files, topic_list_csv):
-        # Read the CSV file, and pair it with JSON and TXT files
-        with open(topic_list_csv, "r") as csv_file:
+        with open(topic_list_csv, "r", encoding="utf-8") as csv_file:
             reader = csv.DictReader(csv_file)
             for idx, row in enumerate(reader):
                 topic_name = row['topic'].replace(' ', '_').replace('/', '_')
-                yield idx, {
-                    "json_file": open(os.path.join(json_files, f'{topic_name}.json'), "r").read(),
-                    "txt_file": open(os.path.join(txt_files, f'{topic_name}.txt'), "r").read(),
-                    "topic": row['topic'],
-                }
+                json_path = os.path.join(json_files, f'{topic_name}.json')
+                txt_path = os.path.join(txt_files, f'{topic_name}.txt')
+                
+                if os.path.exists(json_path) and os.path.exists(txt_path):
+                    with open(json_path, "r", encoding="utf-8") as json_file, \
+                         open(txt_path, "r", encoding="utf-8") as txt_file:
+                        yield idx, {
+                            "json_file": json_file.read(),
+                            "txt_file": txt_file.read(),
+                            "topic": row['topic'],
+                        }
+                else:
+                    print(f"Warning: Files for topic '{row['topic']}' not found. Skipping.")