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-rw-r--r--LectureNotesOnPython.html3
-rw-r--r--LectureNotesOnPython.rst6
2 files changed, 6 insertions, 3 deletions
diff --git a/LectureNotesOnPython.html b/LectureNotesOnPython.html
index 4333633..eb0b066 100644
--- a/LectureNotesOnPython.html
+++ b/LectureNotesOnPython.html
@@ -815,7 +815,7 @@ A list of objects</dd>
<p>'a' in 'banana'
'seed' in 'banana'</p>
<p>练习:写出下面的函数,使得
-in_both('apples', 'oranges')返回'aes'</p>
+in_both('apples', 'oranges')返回'aes'。</p>
</div>
<div class="section" id="id7">
<h1><a class="toc-backref" href="#id29">字符串比较</a></h1>
@@ -1170,6 +1170,7 @@ error-prone(易错)</p>
<span class="keyword">for</span> <span class="name">x</span> <span class="operator word">in</span> <span class="name">lst</span><span class="punctuation">:</span>
<span class="keyword">print</span><span class="punctuation">(</span><span class="literal string single">'</span><span class="literal string interpol">%s</span><span class="literal string single"> (</span><span class="literal string interpol">%d</span><span class="literal string single">)'</span> <span class="operator">%</span> <span class="punctuation">(</span><span class="name">x</span><span class="punctuation">[</span><span class="literal number integer">0</span><span class="punctuation">],</span> <span class="name">x</span><span class="punctuation">[</span><span class="literal number integer">1</span><span class="punctuation">]))</span>
</pre>
+<p>练习: 改写函数 <tt class="docutils literal">word_frequency</tt> , 使它能接受第三个参数, <tt class="docutils literal">black_lst</tt>。 <tt class="docutils literal">black_lst</tt> 是包含要排除考虑的单词的列表。 例如, <tt class="docutils literal">black_lst</tt> 可以是 <tt class="docutils literal">['the', 'and', 'of', 'to']</tt> 。</p>
</div>
<div class="section" id="keyvalue">
<h2><a class="toc-backref" href="#id37">key与value互换</a></h2>
diff --git a/LectureNotesOnPython.rst b/LectureNotesOnPython.rst
index 3f1e76d..0aa6f53 100644
--- a/LectureNotesOnPython.rst
+++ b/LectureNotesOnPython.rst
@@ -439,7 +439,7 @@ in操作符
'seed' in 'banana'
练习:写出下面的函数,使得
-in_both('apples', 'oranges')返回'aes'
+in_both('apples', 'oranges')返回'aes'。
字符串比较
@@ -842,7 +842,9 @@ item的顺序不可预测,不是按照创建时的顺序。
for x in lst:
print('%s (%d)' % (x[0], x[1]))
-
+
+练习: 改写函数 ``word_frequency`` , 使它能接受第三个参数, ``black_lst``。 ``black_lst`` 是包含要排除考虑的单词的列表。 例如, ``black_lst`` 可以是 ``['the', 'and', 'of', 'to']`` 。
+
key与value互换
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~