Answers for "simple flask apps"

simple flask app

# Extremely simple flask application, will display 'Hello World!' on the screen when you run it
# Access it by running it, then going to whatever port its running on (It'll say which port it's running on).
from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

if __name__ == '__main__':
    app.run()

flask app example

import flask

# A simple Flask App which takes
# a user's name as input and responds
# with "Hello {name}!"

app = flask.Flask(__name__)

@app.route('/', methods=['GET', 'POST'])
def index():
    message = ''
    if flask.request.method == 'POST':
        message = 'Hello ' + flask.request.form['name-input'] + '!'
    return flask.render_template('index.html', message=message)

if __name__ == '__main__':
    app.run()

Create a Flask App

# save this as app.py
from flask import Flask, escape, request

app = Flask(__name__)

@app.route('/')
def hello():
    name = request.args.get("name", "World")
    return f'Hello, {escape(name)}!'
  
  # twitter : @MasudSha_
  # @MasudShah