.env tutorial code example

Example 1: activate venv

source env/bin/activate

Example 2: python env

python3 -m venv tutorial-env
tutorial-env\Scripts\activate.bat (window)
source tutorial-env/bin/activate (linux)

Example 3: .env tutorial

npm install dotenv --save

Example 4: .env tutorial

const express = require('express');const app = express();const port = process.env.PORT || 3000;require('dotenv').config();app.get('/', (req, res) => {    res.send(process.env.SECRET_KEY);})app.listen(port, () => {    console.log(`Server is running on port ${port}.`)})

Example 5: .env tutorial

require('dotenv').config()