This is a minimal example of Flask 2.0

flask-2-0.py

from flask import Flask

app = Flask('__name__')


@app.get('/hello')
@app.post('/hello')
def hello():
    return 'This is the awesome hello api request'


@app.get('/world')
@app.post('/world')
def world():
    return 'This is the awesome world api request'


@app.get('/square/<int:number>')
def square(number):
    return f'Square of given number is {number * number}'