技术要点：本文重点在于Python扩展库psutil中函数net_connections()和Process类的用法，分别用来获取本机网络连接和根据进程号pid获取对应的进程对象从而可以管理进程或者获取进程的信息。
详细步骤：
1）在命令提示符环境使用pip install psutil安装扩展库psutil。
2）使用help()函数查看net_connections()函数的用法，如下图：
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3）使用psutil.Process类获得的进程对象支持大量方法，可以使用help(psutil.Process)查看，本文重点演示exe()方法的用法，该方法用来返回进程对应的程序文件绝对路径。
4）编写程序，首先使用函数net_connections()获取本机联网情况，然后使用Process类获取进程并查询信息。
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<input class="pgc-img-caption-ipt" placeholder="图片描述(最多50字)" value="" style="box-sizing: border-box; outline: 0px; color: rgb(102, 102, 102); position: absolute; left: 187.5px; transform: translateX(-50%); padding: 6px 7px; max-width: 100%; width: 375px; text-align: center; cursor: text; font-size: 12px; line-height: 1.5; background-color: rgb(255, 255, 255); background-image: none; border: 0px solid rgb(217, 217, 217); border-radius: 4px; transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;"></tt-image>
5）运行程序，查看运行结果：
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<input class="pgc-img-caption-ipt" placeholder="图片描述(最多50字)" value="" style="box-sizing: border-box; outline: 0px; color: rgb(102, 102, 102); position: absolute; left: 187.5px; transform: translateX(-50%); padding: 6px 7px; max-width: 100%; width: 375px; text-align: center; cursor: text; font-size: 12px; line-height: 1.5; background-color: rgb(255, 255, 255); background-image: none; border: 0px solid rgb(217, 217, 217); border-radius: 4px; transition: all 0.2s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;"></tt-image>
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