python os.popen与os.system区别

深碍√TFBOYSˉ_ 2022-01-09 12:29 275阅读 0赞

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     <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:normal"> os.system 调用系统命令，完成后退出，返回结果是命令执行状态，一般是0</p> 
     <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:normal"> os.popen&nbsp;可以实现一个“管道”，从这个命令获取的值可以在python 中继续被使用</p> 
     <p style="margin-top:0px; margin-bottom:5px; padding-top:0px; padding-bottom:0px; border:0px; list-style:none; word-wrap:normal; word-break:normal; line-height:normal"> <span style="font-family:verdana,'ms song',宋体,Arial,微软雅黑,Helvetica,sans-serif; font-size:12px; word-wrap:normal; word-break:normal; line-height:19px">os.popen使用语法如下：</span></p> 
     <span style="word-wrap:normal; word-break:normal; line-height:normal">os.popen('CMD').readlines()[0]</span> 
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     <span style="word-wrap:normal; word-break:normal; line-height:normal">（1）</span> 
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     <span style="word-wrap:normal; word-break:normal; line-height:normal"><span style="color:rgb(69,69,69); font-family:Tahoma,Helvetica,Arial,STHeiti; font-size:14px; line-height:21px">import&nbsp;ctypes&nbsp;&nbsp;&nbsp;#DLL调用</span><br> </span> 
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     <span style="word-wrap:normal; word-break:normal; line-height:normal"><span style="color:rgb(69,69,69); font-family:Tahoma,Helvetica,Arial,STHeiti; font-size:14px; line-height:21px"><br> </span></span> 
    </div> <p><span style="color:rgb(85,85,85); font-family:Tahoma; background-color:rgb(242,242,242)">（2）</span></p> <p><span style="color:rgb(51,51,51); font-family:Verdana,Arial,Helvetica,sans-serif; font-size:13px; line-height:24px">sys.argv[]是用来获取命令行参数的，sys.argv[0]表示代码本身文件路径，所以参数从</span><span style="margin:0px; padding:0px; color:rgb(51,51,51); font-family:Verdana,Arial,Helvetica,sans-serif; font-size:13px; line-height:24px"><span style="margin:0px; padding:0px; color:rgb(255,0,0)">1</span></span><span style="color:rgb(51,51,51); font-family:Verdana,Arial,Helvetica,sans-serif; font-size:13px; line-height:24px">开始.</span></p> </td> 
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