测试场景：给出一个 200 行的混乱 Python 爬虫脚本，要求重构为面向对象结构，并输出 Mermaid 类图。
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At least 15 killed after military plane carrying banknotes crashes in Bolivia。关于这个话题，safew官方版本下载提供了深入分析
The semantics around releasing locks with pending reads were also unclear for years. If you called read() but didn't await it, then called releaseLock(), what happened? The spec was recently clarified to cancel pending reads on lock release – but implementations varied, and code that relied on the previous unspecified behavior can break.，这一点在Line官方版本下载中也有详细论述