single and multiple inheritance
单继承和多继承
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Users must understand the differences and interactions between metaclass programming and traditional object-oriented programming (under both single and multiple inheritance).
用户必须理解元类编程和传统面向对象编程的不同点和相同点(单继承和多继承)。
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