Correct mcq_carbon size metadata

README.md

@@ -74,10 +74,10 @@ dataset_info:
     dtype: string
   splits:
   - name: train
-    num_bytes: 25805371
+    num_bytes: 15000459
     num_examples: 2600
   download_size: 11786125
-  dataset_size: 25805371
+  dataset_size: 15000459
 - config_name: eukaryote_cls
   features:
   - name: id

scripts/create_mcq_carbon.py

@@ -6,7 +6,7 @@ import random
 from collections import defaultdict
 from pathlib import Path
 
-from datasets import concatenate_datasets, load_dataset
+from datasets import Dataset, concatenate_datasets, load_dataset
 from huggingface_hub import CommitOperationAdd, HfApi, hf_hub_download
 
 
@@ -61,12 +61,12 @@ def main() -> None:
     parquet_path = args.output_dir / PARQUET_PATH
     parquet_path.parent.mkdir(parents=True, exist_ok=True)
     combined.to_parquet(parquet_path)
+    materialized = Dataset.from_parquet(str(parquet_path))
 
     api = HfApi()
     head = api.repo_info(args.output_dataset, repo_type="dataset").sha
     card = Path(hf_hub_download(args.output_dataset, "README.md", repo_type="dataset", revision=head)).read_text()
-    if "- config_name: mcq_carbon\n  features:" not in card:
-        info = f"""- config_name: mcq_carbon
+    info = f"""- config_name: mcq_carbon
   features:
   - name: id
     dtype: int64
@@ -84,12 +84,21 @@ def main() -> None:
     dtype: string
   splits:
   - name: train
-    num_bytes: {combined.data.nbytes}
-    num_examples: {len(combined)}
+    num_bytes: {materialized.info.splits['train'].num_bytes}
+    num_examples: {len(materialized)}
   download_size: {parquet_path.stat().st_size}
-  dataset_size: {combined.data.nbytes}
+  dataset_size: {materialized.info.dataset_size}
 """
-        card = card.replace("- config_name: eukaryote_cls\n  features:", info + "- config_name: eukaryote_cls\n  features:", 1)
+    marker = "- config_name: eukaryote_cls\n  features:"
+    existing = "- config_name: mcq_carbon\n  features:"
+    if existing in card:
+        start = card.index(existing)
+        end = card.index(marker, start)
+        card = card[:start] + info + card[end:]
+        commit_message = "Correct mcq_carbon size metadata"
+    else:
+        card = card.replace(marker, info + marker, 1)
+        commit_message = "Add stratified mcq_carbon configuration"
         config = """- config_name: mcq_carbon
   data_files:
   - split: train
@@ -128,7 +137,7 @@ The script publishes the Parquet file, this card, and the builder script togethe
             repo_id=args.output_dataset,
             repo_type="dataset",
             parent_commit=head,
-            commit_message="Add stratified mcq_carbon configuration",
+            commit_message=commit_message,
             operations=[
                 CommitOperationAdd(path_in_repo=PARQUET_PATH, path_or_fileobj=parquet_path),
                 CommitOperationAdd(path_in_repo="README.md", path_or_fileobj=card_path),