Table per-class: (Optional) Each concrete subclass is mapped to a table and contains columns for super class attributes.
按类表：(可选)每个具体的子类映射到一个表，并且包含超类属性的列。
The grand goal of Python 3000 is a simplification along these lines; but I have not seen any concrete proposals on how such unification and simplification of attributes-as-methods might work.
Python 3000 的主要目标就是简化这些方法；但是有关如何统一和简化属性和方法方面我还没有看到任何具体建议。
Come up with concrete examples of your attributes.
举出一些例子来支持你的特质。
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