Upload examples/read_records.py

examples/read_records.py

@@ -1,17 +1,23 @@
-d74ac9012422fd745117b3323ff2cd0b822f5c69ece52efdd0605fb62d9d191e  examples/read_records.py
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-a519391ccace112e724b0f8fc86bfa484a28a43deb4ddaa0bf74d8477eb1e8d3  manifest.json
-565f71d91eb1062d1ac54a6c72fd8aa394c0308fcb71bdad171d97a01379d9db  README.md
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-f1747e2a8bd880f6bf435803d5dce00c0724775cab661cdf1a0f6e56bb9c64d3  webshop_nemo/episodes.jsonl.gz
-74071823ee0ff37c53b77a4750c786fd48006890c6c5df392ab00a6dbcf50ed0  webshop_nemo/prefix_actions.jsonl.xz
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-8530ecd4f1f309cbd4ef7d19dd6843afec4742f6bcac34313967bd40071870c6  webshop_q38/episodes.jsonl.gz
-d4b79f072e3d0df53d8e52e623f977ffa557031b4ebc4b69539f4f62c367543c  webshop_q38/prefix_actions.jsonl.xz
+"""Read compressed StreamStop JSONL records without extracting the full collection."""
+from pathlib import Path
+import argparse
+import gzip
+import json
+import lzma
+
+
+def iter_records(path):
+    path = Path(path)
+    opener = lzma.open if path.suffix == ".xz" else gzip.open
+    with opener(path, "rt", encoding="utf-8") as stream:
+        for line in stream:
+            if line.strip():
+                yield json.loads(line)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("path", type=Path)
+    args = parser.parse_args()
+    row = next(iter_records(args.path))
+    print("Record fields:", ", ".join(sorted(row)))