Raise DefunctDatasetError

the_pile_stack_exchange.py

@@ -19,6 +19,7 @@ import zipfile
 from pathlib import Path
 
 import datasets
+from datasets.exceptions import DefunctDatasetError
 
 
 _CITATION = """\
@@ -51,6 +52,9 @@ class ThePileStackExchange(datasets.GeneratorBasedBuilder):
     ]
 
     def _info(self):
+        raise DefunctDatasetError(
+            "Dataset 'the_pile_stack_exchange' is defunct and no longer accessible due to unavailability of the source data"
+        )
         return datasets.DatasetInfo(
             description=_DESCRIPTION,
             features=datasets.Features({"domain": datasets.Value("string"), "text": datasets.Value("string")}),