from flask import *
app = Flask(__name__)
@app.route("/")
def index(): return "<h1>Hello World</h1>"
if __name__ == "__main__": app.run(host="0.0.0.0", port=8080, debug=False)

# 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()

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()

#Import Flask, if not then install and import.
import os
try: from flask import *
except: os.system("pip3 install flask") from flask import *
app = Flask(__name__)
@app.route("/")
def index(): return "<h1>Hello World</h1>"
if __name__ == "__main__": app.run(host="0.0.0.0", port=8080, debug=False)

# 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

from flask import Flask, render_template
app = Flask(__name__)
@app.route('/')
@app.route('/index')
@app.route('/home')
def index():	return render_template('index.html')
# this is so the app won't run if the file is imported somewhere, run using a different methed, etc.
if __name__ == '__main__':	app.run('127.0.0.1', port=8080, debug=True) # 127.0.0.1 is the IP adress for localhost. You could also use 'localhost'