29 lines
1.0 KiB
Python
29 lines
1.0 KiB
Python
from datasets import load_dataset
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import json
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import os
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if __name__ == "__main__":
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dataset_dict = load_dataset("shjwudp/chinese-c4")
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train_dataset = dataset_dict["train"]
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chunk_size = 1000000
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total_samples = len(train_dataset)
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num_chunks = (total_samples // chunk_size) + 1
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script_dir = os.path.dirname(os.path.abspath(__file__))
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output_dir = os.path(script_dir, "dataset", "chinese-c4")
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os.makedirs(output_dir, exist_ok=True)
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for i in range(num_chunks):
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start_idx = i * chunk_size
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end_idx = min((i + 1) * chunk_size, total_samples)
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chunk = train_dataset.select(range(start_idx, end_idx))
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output_path = f"{output_dir}/chinese-c4_text_chunk_{i}.jsonl"
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with open(output_path, "w", encoding="utf-8") as f:
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for example in chunk:
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# 每行写入一个 {"text": "xxx"} 对象
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json_line = {"text": example["text"]}
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f.write(json.dumps(json_line, ensure_ascii=False) + "\n")
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print(f"Saved text chunk {i} to {output_path}")
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