diff --git a/content/cat.py b/content/cat.py
new file mode 100644
index 0000000..e69de29
diff --git a/content/ex1.py b/content/ex1.py
index a16b7fb..e45dd88 100644
--- a/content/ex1.py
+++ b/content/ex1.py
@@ -11,6 +11,7 @@
 print 'Yay! Printing.'
 print "I'd much rather you 'not'."
 print 'I "said" do not touch this.'
+#dsy is cat
 
 # 输出中文的时候要在字符串前面加u。
 # 因为python中字符串默认采用ASCII,要声明为unicode就要加u(linux环境下不需要加u)
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/521xueweihan/python/compare/master...12494848:pythonLearn:master.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://github.com/521xueweihan/python/compare/master...12494848:pythonLearn:master.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>