预计阅读本页时间：-
Chapter Summary
In this chapter, we sampled common ways to use and combine classes to optimize their reusability and factoring benefits—what are usually considered design issues that are often independent of any particular programming language (though Python can make them easier to implement). We studied delegation (wrapping objects in proxy classes), composition (controlling embedded objects), and inheritance (acquiring behavior from other classes), as well as some more esoteric concepts such as pseudoprivate attributes, multiple inheritance, bound methods, and factories.
The next chapter ends our look at classes and OOP by surveying more advanced class-related topics; some of its material may be of more interest to tool writers than application programmers, but it still merits a review by most people who will do OOP in Python. First, though, another quick chapter quiz.
