from subprocess import call call(["ls", "-al","/"])
Standard input is empty
total 48 drwxr-xr-x 12 root root 4096 2013-10-18 10:08 . drwxr-xr-x 12 root root 4096 2013-10-18 10:08 .. drwxr-xr-x 2 root root 4096 2013-10-18 10:06 bin drwxrwxr-x 3 root root 4096 2013-10-18 10:05 build drwxr-xr-x 3 root root 4096 2013-10-18 10:05 dev drwxr-xr-x 28 root root 4096 2013-10-18 10:08 etc drwxr-xr-x 3 root root 4096 2014-01-21 11:10 home drwxr-xr-x 5 root root 4096 2013-10-18 10:08 lib drwxrwxr-x 2 root root 4096 2013-10-18 10:05 spoj drwxrwxr-x 5 root root 4096 2014-01-21 11:10 tmp drwxr-xr-x 7 root root 4096 2013-10-18 10:08 usr drwxr-xr-x 13 root root 4096 2013-10-18 10:05 var