How to load environment variables in a config.ini file?

Question

I have a config.ini file which contains some properties but I want to read the environment variables inside the config file.

[section1]
 prop1:(from envrinment variable) or value1

Is this possible or do I have to write a method to take care of that?

Answer 1

I know this is late to the party, but someone might find this handy. What you are asking after is value interpolation combined with os.environ .

Pyramid?

The logic of doing so is unusual and generally this happens if one has a pyramid server, (which is read by a config file out of the box) while wanting to imitate a django one (which is always set up to read os.environ).
If you are using pyramid, then pyramid.paster.get_app has the argument options: if you pass os.environ as the dictionary you can use %(variable)s in the ini. Not that this is not specific to pyramid.paster.get_app as the next section shows (but my guess is get_app is the case).

app.py

from pyramid.paster import get_app
from waitress import serve
import os

app = get_app('production.ini', 'main', options=os.environ)
serve(app, host='0.0.0.0', port=8000, threads=50)

production.ini:

[app:main]
sqlalchemy.url = %(SQL_URL)s
...

Configparse?

The above is using configparser basic interpolation .

Say I have a file called config.ini with the line

[System]
conda_location = %(CONDA_PYTHON_EXE)

The following will work...

import configparser, os
cfg = configparser.ConfigParser()
cfg.read('config.ini')
print(cfg.get('System', 'conda_location', vars=os.environ))

Answer 2

我认为：thinking_face，使用 .env 并在 config.py from dotenv import load_dotenv()和下一行load_dotenv() ，它将从 .env 文件加载 envs