API versioning with blueprints in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a Flask blueprint named 'v1'.

Flask

from flask import Blueprint

api_v1 = Blueprint('v1', __name__, url_prefix='/api/v1')

@api_v1.route('/hello')
def hello():
    return 'Hello from version 1!'

app.register_blueprint([1])

Drag options to blanks, or click blank then click option'

Aapi_v1

Bapi_v2

Capp

Dblueprint

Attempts:

3 left

💡 Hint

Common Mistakes

Using the app object instead of the blueprint in register_blueprint.

Confusing blueprint names like api_v2 instead of api_v1.

You register the blueprint object api_v1 with the Flask app to enable the routes under '/api/v1'.

2fill in blank

medium

Complete the code to create a second blueprint for API version 2 with prefix '/api/v2'.

Flask

api_v2 = Blueprint('v2', __name__, url_prefix=[1])

@api_v2.route('/hello')
def hello_v2():
    return 'Hello from version 2!'

app.register_blueprint(api_v2)

Drag options to blanks, or click blank then click option'

A'/api/v2'

B'/v2/api'

C'/api/version2'

D'/api/v1'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong URL prefix that does not match the version.

Forgetting the quotes around the string prefix.

The URL prefix for version 2 API is '/api/v2' to keep versioning consistent.

3fill in blank

hard

Fix the error in the route decorator to correctly define a GET endpoint in the blueprint.

Flask

@api_v1.route('/status', methods=[1])
def status():
    return {'status': 'ok'}

Drag options to blanks, or click blank then click option'

A'GET'

B['POST']

C['GET']

DGET

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string without brackets like 'GET' instead of ['GET'].

Using the wrong HTTP method like 'POST' when GET is needed.

The methods argument expects a list of HTTP methods as strings, so ['GET'] is correct.

4fill in blank

hard

Fill both blanks to register blueprints for v1 and v2 with the Flask app.

Flask

app = Flask(__name__)

app.[1]_blueprint(api_v1)
app.[2]_blueprint(api_v2)

Drag options to blanks, or click blank then click option'

Aregister

Badd

Dattach

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent methods like add_blueprint or attach_blueprint.

Using different methods for each blueprint.

The correct method to add a blueprint to the app is register_blueprint.

5fill in blank

hard

Fill all three blanks to create a versioned API blueprint with a route that returns JSON.

Flask

from flask import Blueprint, jsonify

api_[1] = Blueprint('v[2]', __name__, url_prefix=[3])

@api_[1].route('/info')
def info():
    return jsonify({'version': 'v[2]', 'status': 'running'})

Drag options to blanks, or click blank then click option'

A1

B'/api/v1'

C2

D'/api/v2'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing version numbers between variable names and URL prefixes.

Forgetting quotes around the URL prefix string.

The blueprint variable and name use '1' for version 1, and the URL prefix is '/api/v1'.