dataset_download.py

import os
import json
from tqdm import tqdm


# 下载预训练数据集
os.system("modelscope download --dataset ddzhu123/seq-monkey mobvoi_seq_monkey_general_open_corpus.jsonl.tar.bz2 --local_dir your_local_dir")
# 解压预训练数据集
os.system("tar -xvf your_local_dir/mobvoi_seq_monkey_general_open_corpus.jsonl.tar.bz2")

# 下载SFT数据集
os.system(f'huggingface-cli download --repo-type dataset --resume-download BelleGroup/train_3.5M_CN --local-dir BelleGroup')



# 1 处理预训练数据
def split_text(text, chunk_size=512):
    """将文本按指定长度切分成块"""
    return [text[i:i+chunk_size] for i in range(0, len(text), chunk_size)]

input_file = 'mobvoi_seq_monkey_general_open_corpus.jsonl'

with open('seq_monkey_datawhale.jsonl', 'a', encoding='utf-8') as pretrain:
    with open(input_file, 'r', encoding='utf-8') as f:
        data = f.readlines()
        for line in tqdm(data, desc=f"Processing lines in {input_file}", leave=False):  # 添加行级别的进度条
            line = json.loads(line)
            text = line['text']
            chunks = split_text(text)
            for chunk in chunks:
                pretrain.write(json.dumps({'text': chunk}, ensure_ascii=False) + '\n')

# 2 处理SFT数据

def convert_message(data):
    """
    将原始数据转换为标准格式
    """
    message = [
        {"role": "system", "content": "你是一个AI助手"},
    ]
    for item in data:
        if item['from'] == 'human':
            message.append({'role': 'user', 'content': item['value']})
        elif item['from'] == 'assistant':
            message.append({'role': 'assistant', 'content': item['value']})
    return message

with open('BelleGroup_sft.jsonl', 'a', encoding='utf-8') as sft:
    with open('BelleGroup/train_3.5M_CN.json', 'r') as f:
        data = f.readlines()
        for item in tqdm(data, desc="Processing", unit="lines"):
            item = json.loads(item)
            message = convert_message(item['conversations'])
            sft.write(json.dumps(message, ensure_ascii=False) + '\n')