在python中执行系统命令

Question

我有使用perl编写脚本的经验，这使我可以轻松地使用back-ticks执行linux命令。我想知道，我该怎么做这个Python？捕获命令（输出）的结果是否有特殊的方法？

谢谢:)

Answer 1

为了增加urschrei的答案，这里是一个例子（Windows）中：

>>> import subprocess 
>>> p = subprocess.Popen(['ping', '192.168.111.198'], stdout=subprocess.PIPE, st 
derr=subprocess.PIPE) 
>>> out, err = p.communicate() 
>>> print out 

Pinging 192.168.111.198 with 32 bytes of data: 
Reply from 192.168.111.198: bytes=32 time<1ms TTL=128 
Reply from 192.168.111.198: bytes=32 time<1ms TTL=128 
Reply from 192.168.111.198: bytes=32 time<1ms TTL=128 
Reply from 192.168.111.198: bytes=32 time<1ms TTL=128 

Ping statistics for 192.168.111.198: 
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), 
Approximate round trip times in milli-seconds: 
    Minimum = 0ms, Maximum = 0ms, Average = 0ms 

>>> print err 

>>> print p.returncode 
0 

Answer 2

您正在寻找的subprocess模块，特别是subprocess.check_call()和/或subprocess.check_output()命令。