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		<title>Cprofile on 春江暮客</title>
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				<title>用 Python cProfile 排查 CSV 脚本慢：定位热点并验证集合查询优化</title>
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				<description>用 cProfile 和 pstats 定位 CSV 筛选中的重复列表扫描，改成一次性集合查询，并验证输出和实际耗时。</description>
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