python软件是什么作用_python-dotenv的用途是什么？

Need an example and please explain me the purpose of python-dotenv.

I am kind of confused with the documentation.

解决方案Reads the key,value pair from .env and adds them to environment variable. It is great of managing app settings during development and in production using 12-factor principles.

Assuming you have created the .env file along-side your settings module.

.

├── .env

└── settings.py

Add the following code to your settings.py

# settings.py

import os

from os.path import join, dirname

from dotenv import load_dotenv

dotenv_path = join(dirname(__file__), '.env')

load_dotenv(dotenv_path)

SECRET_KEY = os.environ.get("SECRET_KEY")

DATABASE_PASSWORD = os.environ.get("DATABASE_PASSWORD")

.env is a simple text file. With each environment variables listed per line, in the format of KEY="Value", lines starting with # is ignored.

SOME_VAR=someval

# I am a comment and that is OK

FOO="BAR"