Python Coding Challange - Question with Answer (01131025)

 

Explanation:

from flask import Flask

Meaning:

You are importing the Flask class from the Flask library.

Purpose:

Flask is a micro web framework used to create web applications in Python.

This line lets you use Flask to build your app.

app = Flask(__name__)

Meaning:

You are creating a Flask application object named app.

__name__ explanation:

It tells Flask where your application’s code is located.

Purpose:

This object (app) will handle web requests and send back responses.

@app.route('/')

Meaning:

This is a route decorator — it connects a URL to a function.

'/' means the home page (the root URL).

Purpose:

When someone visits http://localhost:5000/, Flask will call the function below this line (index()).

def index():

Meaning:

Defines a Python function named index.

Purpose:

This function runs when the user opens the / route.

return "Hi"

Meaning:

This tells Flask to send the text "Hi" back to the browser.

Output:

When you open the page, you’ll see:

Hi

 Final Result in Browser:

When you run the app and go to http://127.0.0.1:5000/

→ You’ll see the text Hi

Decode the Data: A Teen’s Guide to Data Science with Python