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              写字楼里写字间，写字间里程序员；程序人员写程序，又拿程序换酒钱。酒醒只在网上坐，酒醉还来网下眠；酒醉酒醒日复日，网上网下年复年。
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<center><font color="#1BC3FB" size="4">Python3 基础学习笔记第四章 —— 【if语句】</font></center>
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