fix dataloader

proof-pile-2.py

@@ -19,29 +19,6 @@ A dataset of high quality mathematical text. """
 _HOMEPAGE = "https://github.com/EleutherAI/math-lm"
 
 
-SPLITS = ["train", "validation", "test"]
-
-_DATA_PATHS = {
-        "arxiv": {
-            split: [f'arxiv/{split}/arXiv_{str(i).zfill(3)}.jsonl.zst' for i in range(100)]
-            for split in SPLITS        
-        },
-        "open-web-math": {
-            split: [
-                os.path.join(f"open-web-math/{split}", filename)
-                for filename in os.listdir(f"open-web-math/{split}")
-            ] 
-            for split in SPLITS
-        },
-        "algebraic-stack": {
-            split: [
-                os.path.join(f"algebraic-stack/{split}", filename)
-                for filename in os.listdir(f"algebraic-stack/{split}")
-            ] 
-            for split in SPLITS
-        }
-}
-
 class ProofPile2Config(datasets.BuilderConfig):
     """BuilderConfig for RedPajama sample."""
 
@@ -72,7 +49,7 @@ class ProofPile2(datasets.GeneratorBasedBuilder):
     BUILDER_CONFIGS = [
         ProofPile2Config(
             name='default',
-            subsets=list(_DATA_PATHS.keys()),
+            subsets=['arxiv', 'open-web-math', 'algebraic-stack'],
             version=VERSION,
             description="All subsets"
         ),
@@ -123,6 +100,7 @@ class ProofPile2(datasets.GeneratorBasedBuilder):
                             x 
                             for subset in self.config.subsets 
                             for x in dl_manager.iter_files(os.path.join(subset, split))
+                            for subset in self.config.subsets
                         ]
                     ))
                 },