37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
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import os, json, random
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HERE = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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os.environ["HF_HOME"] = os.path.join(HERE, "hf_cache")
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from datasets import load_dataset
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OUT = os.path.join(HERE, "data", "sft_chat.jsonl")
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N = 500
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random.seed(0)
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def main():
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ds = load_dataset("databricks/databricks-dolly-15k", split="train")
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idx = list(range(len(ds)))
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random.shuffle(idx)
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rows = []
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for i in idx:
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r = ds[i]
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instr, ctx, resp = r["instruction"].strip(), r["context"].strip(), r["response"].strip()
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if not instr or not resp:
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continue
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if len(resp) > 1200: # keep seq length sane
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continue
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user = f"{instr}\n\n{ctx}" if ctx else instr
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rows.append({"messages": [{"role": "user", "content": user},
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{"role": "assistant", "content": resp}]})
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if len(rows) >= N:
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break
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with open(OUT, "w") as f:
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for r in rows:
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f.write(json.dumps(r) + "\n")
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print(f"wrote {len(rows)} chat examples -> {OUT}")
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print("sample user:", rows[0]["messages"][0]["content"][:80])
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if __name__ == "__main__":
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main()
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