Update nlgraph.py

nlgraph.py

@@ -48,7 +48,7 @@ class NLGraph(datasets.GeneratorBasedBuilder):
         )
 
     def _split_generators(self, dl_manager):
-        task_dir = os.path.join(self.config.data_dir, self.config.task_name)
+        task_dir = dl_manager.download_and_extract(f"https://huggingface.co/datasets/huayangli/nlgraph/tree/main/{self.config.task_name}")
         return [
             datasets.SplitGenerator(
                 name=datasets.Split.TRAIN,