specify encoding method when loading dataset

ner-wikinews-dataset.py

@@ -1,18 +1,9 @@
 import json
 from typing import Generator
 
-from datasets import (
-    BuilderConfig,
-    DatasetInfo,
-    DownloadManager,
-    Features,
-    GeneratorBasedBuilder,
-    Sequence,
-    Split,
-    SplitGenerator,
-    Value,
-    Version,
-)
+from datasets import (BuilderConfig, DatasetInfo, DownloadManager, Features,
+                      GeneratorBasedBuilder, Sequence, Split, SplitGenerator,
+                      Value, Version)
 
 _CITATION = ""
 _DESCRIPTION = "This is a dataset of Wikinews articles manually labeled with the named entity label."
@@ -86,7 +77,7 @@ class NerWikinewsDataset(GeneratorBasedBuilder):
         self, dl_manager: DownloadManager
     ) -> list[SplitGenerator]:
         data_file = dl_manager.download_and_extract(_URL)
-        with open(data_file, "r") as f:
+        with open(data_file, "r", encoding="utf-8") as f:
             data = json.load(f)
         data = self._convert_data_format(data)
         return [