在python程序中运行shell脚本

#!/usr/bin/python
# 导入各种模块
import sys
...# 各种变量
consul_ip &＃61; sys.argv[2]
install_path &＃61; ...
...# 使用os.system()在python执行shell命令
os.system(&＃39;mkdir -p &＃39;&＃43;install_path)
...
# 进一步对变量进行处理成 “export install_path&＃61; /opt” 形式
def create_env_str(env_dict):import pdbpdb.set_trace()env_str &＃61; ""for k, v in env_dict.items():env_str &＃61; env_str &＃43; "export " &＃43; k &＃43; "&＃61;" &＃43; v &＃43; "\n"return env_str# 将变量设置成字典&＃xff0c;以便传递到shell脚本中使用
env_dict &＃61; {"install_path": install_path,"current_dir": current_dir,"req_path": req_path,"deps_path": deps_path,"packages": packages,"log_path": log_path,"consul_ip": sys.argv[2]
}# 创建可执行shell脚本
def gen_script_fire(env_dict):env &＃61; create_env_str(env_dict)# shell中要执行的具体的指令cmd &＃61; &＃39;&＃39;&＃39;
#此处是往“/tmp/vmware-exporter-systemctl”文件中写内容,配置服务
sudo cat >/tmp/vmware-exporter-systemctl<[Unit]
Description&＃61;Vmware Exporter
After&＃61;network.target
[Service]
ExecStart&＃61;/usr/bin/python ${install_path}/vmware_exporter/vmware_exporter/vmware_exporter.py -c ${consul_ip}
[Install]
WantedBy&＃61;default.target
EOF
...&＃39;&＃39;&＃39;# 开始写with open(&＃39;/tmp/service_firewalld.sh&＃39;, &＃39;w&＃43;&＃39;) as f:f.write("#!/bin/bash" &＃43; "\n")f.write(env)f.write(cmd)def run(cmd):
# 用subprocess.call 方法执行shell脚本ret &＃61; subprocess.call(cmd, shell&＃61;True)if ret !&＃61; 0:sys.exit(&＃39;Exec cmd %s error, return value: %s&＃39; % (cmd, str(ret)))def run_script():run("sudo bash /tmp/service_firewalld.sh")gen_script_fire(env_dict)
run_script()


注意&＃xff1a;

cmd&＃61; ”’ ”’ 中有expect命令时&＃xff0c;可能出现expect spawn not found错误

原因&＃xff1a;expec不是shell中的命令&＃xff0c;所以在执行bash shellname.sh时会报错
解决&＃xff1a;参考&＃xff1a;http://blog.csdn.net/chinabluexfw/article/details/7461944
1. 不用bash或sh执行shell脚本&＃xff0c;使用./shellname.sh命令执行
2. 使用chmod &＃43;x shellname.sh赋权限