From 7f47b672c873a5ef5ee0c86dfb80c26e796ccf31 Mon Sep 17 00:00:00 2001
From: Hui Lan <lanhui@zjnu.edu.cn>
Date: Sun, 14 Apr 2019 08:46:01 +0800
Subject: When is a good time to consider defining a new function?

---
 LectureNotesOnPython.rst | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'LectureNotesOnPython.rst')

diff --git a/LectureNotesOnPython.rst b/LectureNotesOnPython.rst
index a4cd91f..e923444 100644
--- a/LectureNotesOnPython.rst
+++ b/LectureNotesOnPython.rst
@@ -936,6 +936,8 @@ key与value互换
 函数
 ------
 
+当我们开始不断复制黏贴代码时，就要考虑把这部分代码做成函数了。
+
 函数 ``unique_words`` 与 ``unique_words2`` 哪个运行速度快？
 
 .. code:: python
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