What are Flask views and how do they work?

What are Flask views and how do they work?

Flask views are functions that handle requests and return responses in a Flask web application. They define the logic for what happens when a user accesses a specific URL.

Can you give me an example of a simple Flask view?

Sure! Here's a basic example:

from flask import Flask

app = Flask(__name__)

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

This view returns 'Hello, World!' when the root URL is accessed.

How do I pass parameters to a Flask view?

You can pass parameters using the route decorator. For example:

@app.route('/user/<username>')
def show_user_profile(username):
    return f'User: {username}'

This view will display the username in the URL.

What if I want to return JSON data from a Flask view?

You can use the jsonify function from Flask. For example:

from flask import jsonify

@app.route('/data')
def data():
    return jsonify({'key': 'value'})

This will return a JSON response.