why use flask code example

Example 1: flask example

from flask import Flask
app = Flask(__name__)

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

Example 2: how to import flask

from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello():
    return "Hello, World!"

Example 3: what is flask

These are by far the best Flask tutorials there are: https://youtube.com/playlist?list=PLzMcBGfZo4-n4vJJybUVV3Un_NFS5EOgX

Example 4: what is flask

Flask is a web framework written in Python. 
This means flask provides you with tools, libraries and technologies that allow you to build a web application.

Here a a few resources for learning Flask (I have not personally used them before):
	https://youtube.com/playlist?list=PLzMcBGfZo4-n4vJJybUVV3Un_NFS5EOgX
    https://realpython.com/tutorials/flask/
    https://opensource.com/article/18/4/flask