PYTHON

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 demo code

from flask import Flask  
  
app = Flask(__name__) #creating the Flask class object   
 
@app.route('/') #decorator drfines the   
def home():  
    return "hello, this is our first flask website";  
  
if __name__ =='__main__':  
    app.run(debug = True)  

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()

flask tutorial

from flask import Flask
app = Flask(__name__)

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

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