Change None to ""

persian-license-plate-v1.py

@@ -1,7 +1,5 @@
-import os
-import numpy as np
-from PIL import Image
 import csv
+import os
 
 import datasets
 
@@ -58,13 +56,13 @@ class PersianLicensePlate(datasets.GeneratorBasedBuilder):
         test_path = dl_manager.download_and_extract(_DOWNLOAD_URLS["test"])
 
         archive_path = dl_manager.download(_DOWNLOAD_URLS['train_dataset'])
-        train_extracted_path = dl_manager.extract(archive_path) if not dl_manager.is_streaming else None
+        train_extracted_path = dl_manager.extract(archive_path) if not dl_manager.is_streaming else ""
 
         archive_path = dl_manager.download(_DOWNLOAD_URLS['val_dataset'])
-        val_extracted_path = dl_manager.extract(archive_path) if not dl_manager.is_streaming else None
+        val_extracted_path = dl_manager.extract(archive_path) if not dl_manager.is_streaming else ""
 
         archive_path = dl_manager.download(_DOWNLOAD_URLS['test_dataset'])
-        test_extracted_path = dl_manager.extract(archive_path) if not dl_manager.is_streaming else None
+        test_extracted_path = dl_manager.extract(archive_path) if not dl_manager.is_streaming else ""
 
         return [
             datasets.SplitGenerator(