# coding: utf-8

 from subprocess import Popen, PIPE, STDOUT
 import sys


 def run_cmd(cmd):

     p = Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT)

     stdout, stderr = p.communicate()

     return p.returncode, stdout.strip()

 code, out = run_cmd('ls /')
　if code:
　    print '命令执行成功'
  else:
　　  print '命令执行失败'
　　　sys.exit(1)

import pwd

uid, gid = pwd.getpwnam(os_mysql_user).pw_uid, pwd.getpwnam(os_mysql_group).pw_gid

data_path = '/data/3306'

#------ 创建数据目录及相关子目录和文件----

if not os.path.exists(data_path):

    os.makedirs(data_path)

os.chown(data_path, uid, gid)

data_path_list = ['data', 'tmpdir']

for data_path_item in data_path_list:

    data_path_dir = os.path.join(data_path,data_path_item)

    if not os.path.exists(data_path_dir):

        os.makedirs(data_path_dir)

    os.chown(data_path_dir,uid,gid)