Update README.md

README.md

@@ -80,6 +80,42 @@ for config in ("random", "stepwise", "gaussian"):
         print(config, sample)
         break       
 ```
+Alternatively, you can bypass the `datasets` library and quickly download (~1.5hrs, depending on connection) a specific config in the same order used to pre-train BERTIN models in a massive (~200GB) JSON-lines files:
+
+```python
+import io
+import gzip
+import json
+import sys
+
+import requests
+from tqdm import tqdm
+
+_DATA_URL_TRAIN = "https://huggingface.co/datasets/bertin-project/mc4-es-sampled/resolve/main/mc4-es-train-50M-{config}-shard-{index:04d}-of-{n_shards:04d}.json.gz"
+
+
+def main(config="stepwise"):
+    data_urls = [
+        _DATA_URL_TRAIN.format(
+            config=config,
+            index=index + 1,
+            n_shards=1024,
+        )
+        for index in range(1024)
+    ]
+    with open(f"mc4-es-train-50M-{config}.jsonl", "w") as f:
+        for dara_url in tqdm(data_urls):
+            response = requests.get(dara_url)
+            bio = io.BytesIO(response.content)
+            with gzip.open(bio, "rt", encoding="utf8") as g:
+                for line in g:
+                    json_line = json.loads(line.strip())
+                    f.write(json.dumps(json_line) + "\n")
+
+
+if __name__ == "__main__":
+    main(sys.argv[1])
+```
 
 ### Supported Tasks and Leaderboards