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另一个关键优势是Pytest丰富的断言机制。传统的unittest框架需要使用各种assert方法 (assertEqual, assertTrue等)，而Pytest允许直接使用Python原生的assert语句，并能在断言失败时提供极其详细的错误信息。这在我调试复杂测试用例时节省了大量时间。