Mastering Object-oriented Python by 未知

Author:未知
Language: eng
Format: epub
Publisher: Packt Publishing

We're able to replace the scan in post_iter() with a much more efficient operation. This loop will rapidly yield the Post objects based on the keys saved in the _post_list attribute of Blog. We could consider replacing this for statement with a generator expression:

return (self.database[k] for k in blog._post_list)

The point of this optimization to the post_iter() method is to eliminate the search of all the keys for the matching keys. We've replaced searching all keys with simple iteration over an appropriate sequence of relevant keys. A simple timing test, which alternates between updating Blog and Post and rendering the Blog to RST, shows us the following results:

Access2: 14.9 Access: 19.3

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