6 Steps To Create And Run Python Flask App In Virtual Environment

 

Flask is a python web framework.

We can create the web application, Rest API using Flask.

So let's see the minimal steps and minimal line of code to run a flask app

Pre Request: Python and pip should be installed

Follow the below steps:-

Step 1) pip install virtualenv // To install virtualenv globly

Step 2) virtualenv venv // To create virtual environment

Step 3) source ./venv/Scripts/activate // To activate virtual environment

Step 4) pip install Flask // To install Flask in the virtual environment

Step 5) Create app.py file and copy pest below the minimal code of the Flask app

from flask import Flask, escape, request

app = Flask(__name__)

@app.route('/')

def hello():

    name = request.args.get("name", "World")

    return f'Hello, {escape(name)}!'

Step 6) flask run // To Run Flask App