How to use Flask in Google Colaboratory Python Notebook?

Question

I am trying to build a website using Flask, in a Google Colab Python notebook. However, running a regular Flask code that works on a regular Python, fails to work on Google

Answer 1

from flask_ngrok import run_with_ngrok
from flask import Flask

app = Flask(__name__)

run_with_ngrok(app)  
@app.route("/")

def home():
    return f"Running Flask on Google Colab!"

app.run()