<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Ketty_Lin的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Ketty_Lin</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Ketty_Lin]]></copyright><item><title><![CDATA[文件处理篇python]]></title><link>https://blog.youkuaiyun.com/Ketty_Lin/article/details/117638283</link><guid>https://blog.youkuaiyun.com/Ketty_Lin/article/details/117638283</guid><author>Ketty_Lin</author><pubDate>Sun, 06 Jun 2021 23:12:16 +0800</pubDate><description><![CDATA[import math
r=eval (input ("请输入圆的半径："))
area=math.pi*r*r
print("圆面积为：",area)


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