03 - Python 执行 shell 命令

Python 执行 shell 命令，并获取脚本返回值、脚本输出到 stdout 的内容、脚本输出到 stderr 的内容（各版本兼容）：

import shlex
import subprocess
import sys


def run_command(command):
    process = subprocess.Popen(
        shlex.split(command), stdout=subprocess.PIPE, stderr=subprocess.PIPE
    )
    out, err = process.communicate()
    ret = process.poll()

    if ret != 0:
        logger.error("Run command failed (ret: %d, command: %s)", ret, command)
        return ret, err.decode("utf-8") if sys.version_info[0] == 3 else err

    return ret, out.decode("utf-8") if sys.version_info[0] == 3 else out