Python无法读取环境变量

Question

I used Ubuntu16.04

When I use sudo python3 into the interactive shell

import os
os.environ['SECRET_KEY']

it can't read the SECRET_KEY

I set it in the /etc/profile.d/project.sh

project.sh

export SECRET_KEY=the_key

After reloading it but in vain.

I also set in the ~/.profile

But still got the error.

How do I fixed it?

[ EDIT ]

It can work in sudo -E python3

But the futher problem is that when I run sudo -E supervisor reread/reload

I have the command defined in the [program:site] section to launch the gunicorn.conf.py

/etc/supervisor/conf.d/weather.conf

[program:site]
directory=/home/nhcc/campus-weather-station/weather_station
command=/home/nhcc/venv/weather_station/bin/gunicorn -c /home/nhcc/campus-weather-station/weather_station/gunicorn.conf.py -p gunicorn.pod weather_station.wsgi

gunicorn.conf.py

# -*- coding: utf-8 -*-
# /usr/bin/python3
import os

bind = "{}:8080".format(os.environ['DJANGO_WEATHER_STATION_HOST'])
worders = (os.sysconf('SC_NPROCESSORS_ONLN') * 2) + 1
loglevel = 'error'
command = "WTR_VENV/gunicorn"
pythonpath = "$PROJECT/weather_station"

it will showed up the error .

Answer 1

When you run it with sudo , you're actually going to run the program as root . So any environment setup for your current user isn't going to apply unfortunately without special care.

Fortunately sudo -E will do the trick. See this SO question for more details.