目录引言：为什么需要自定义异常一、异常基础：先搞懂python的异常体系1.1 异常是什么？1.2 异常处理三件套二、自定义异常入门：三步创建你的第一个异常2.1 最简单的自定义异常2.2 为什么需要自定义异常？三、进阶技
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