subprocess模块作用

通过此模块，可直接运行系统命令代码

#Author Kangimport subprocess#subprocess.getoutput命令：#把命令运行结果传给res变量，但不能判断命令是否执行成功res = subprocess.getoutput("ls -lh /etc")print(res)#结果：lrwxr-xr-x@ 1 root wheel 11B Sep 14 2016 /etc -> private/etc

#subprocess.getstatusoutput命令：#把命令运行结果传给res1变量，此结果为一个元组，带有命令执行是否成功#0为成功，非0为不成功res1 = subprocess.getstatusoutput("ls -lh /etc")print(res1[0])print(res1[1])print(res1)#结果：0lrwxr-xr-x@ 1 root wheel 11B Sep 14 2016 /etc -> private/etc(0, 'lrwxr-xr-x@ 1 root wheel 11B Sep 14 2016 /etc -> private/etc')res2 = subprocess.getstatusoutput("lsbb -lh /etc")print(type(res2))print(res2[0])#结果：<class 'tuple'>127/bin/sh: lsbb: command not found