python笔记：使用Python执行命令

python3

代码语言：javascript复制

import subprocess
def cmd(cmdstr):
    return subprocess.check_output(cmdstr, shell=True)

python2

代码语言：javascript复制

import commands
commands.getoutput('ls /bin/ls')

如果需要实时看进度（比如ping)：

代码语言：javascript复制

import subprocess

def cmd(cmdstr):
    ps = subprocess.Popen(cmdstr, stdin=subprocess.PIPE, stdout=subprocess.PIPE, shell=True)
    while True:
        data = ps.stdout.readline()
        if data == b'':
            if ps.poll() is not None:
                break
        else:
            # print("libos output: {}".format(data.decode()))
            yield data.decode()

ping python3

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