Fix streaming mode bug

peoples_speech.py

@@ -157,7 +157,7 @@ class PeoplesSpeech(datasets.GeneratorBasedBuilder):
         # In non-streaming mode, we extract the archives to have the data locally:
         local_extracted_archive_paths = dl_manager.extract(audio_archive_paths) \
             if not dl_manager.is_streaming else \
-            {split: [None] * len(audio_archive_paths) for split in splits_to_configs}
+            {split: [None] * len(audio_archive_paths[split]) for split in splits_to_configs}
 
         manifest_urls = {
             split: _MANIFEST_URL.format(split=split, config=config) for split, config in splits_to_configs.items()