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source/c01/p03_keep_last_n_items.rst
@@ -11,7 +11,7 @@
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解决方案
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----------
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保留有限历史记录正是 ``collections.deque`` 大显身手的时候。比如,下面的代码在多行上面做简单的文本匹配,
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-并只返回在前N行中匹配成功的行:
+并返回匹配所在行的前N行:
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.. code-block:: python
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