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3.编程思维体系构建/3.6.4.5阶段五：迭代生成.md
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@@ -78,7 +78,7 @@ StopIteration
**Analogy**: An iterable is like a book (one can flip through the pages) and an iterator for a book would be a bookmark (saves the position and can locate the next page). Calling `iter` on a book gives you a new bookmark independent of other bookmarks, but calling `iter` on a bookmark gives you the bookmark itself, without changing its position at all. Calling `next` on the bookmark moves it to the next page, but does not change the pages in the book. Calling `next` on the book wouldn't make sense semantically. We can also have multiple bookmarks, all independent of each other.
## 生成器：懒人迭代器!
## 生成器：懒人迭代器！
```python
def test_iterator():