Listing 3: Examining the inheritance structure of a class.
清单3：检查类的继承结构。
Such object-oriented tool support makes the inheritance structure of a system explicit.
这种面向对象工具支持使得系统的继承结构清晰可见。
WxPython has a greater emphasis on inheritance structure than do most of the other toolkits, and it USES "events" rather than callbacks.
wxPython对继承结构的关注程度高于大多数其它工具箱，而且它使用“事件”，而不是回调。
It has a consistent class instantiation and inheritance structure and the ability of intercessive structural computational reflection, which enables it to support safe metaclass programming.
该语言具有协调一致的类对象结构，具备结构化计算反射能力，能够进行安全的元类程序设计。
It has a consistent class instantiation and inheritance structure and the ability of intercessive structural computational reflection, which enables it to support safe metaclass programming.
该语言具有协调一致的类对象结构，具备结构化计算反射能力，能够进行安全的元类程序设计。
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