python - 环境变量没有设置

Question

我使用环境变量来传递设置文件:

app.config.from_envvar('DVR_SETTINGS')

它在我的开发系统上运行良好，但是当我尝试在嵌入式 Linux 系统(arago)上部署这个东西时，我得到了这个:

RuntimeError: The environment variable 'DVR_SETTINGS' is not set and as such configuration could not be loaded.
Set this variable and make it point to a configuration file

但我已经做到了:

root@dm365-evm:/var/www/dvr# echo $DVR_SETTINGS
/var/www/dvr/settings/production.py

Answer 1

您需要导出环境变量:

export DVR_SETTINGS

您可以将设置和导出合并在一行中:

export DVR_SETTINGS=/var/www/dvr/settings/production.py

或者你可以将它放在运行 Flask 服务器的线上:

DVR_SETTINGS=/var/www/dvr/settings/production.py python flask_script.py