HTTP status codes for APIs in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to return a 200 OK status in a Flask API response.

Flask

from flask import Flask, jsonify
app = Flask(__name__)

@app.route('/status')
def status():
    return jsonify({'message': 'Success'}), [1]

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

A200

B301

C500

D404

Attempts:

3 left

💡 Hint

Common Mistakes

Using 404 which means Not Found

Using 500 which means Server Error

The HTTP status code 200 means the request was successful.

2fill in blank

medium

Complete the code to return a 404 Not Found status when a resource is missing.

Flask

from flask import Flask, jsonify
app = Flask(__name__)

@app.route('/item/<int:id>')
def get_item(id):
    item = None  # pretend we looked for the item
    if not item:
        return jsonify({'error': 'Item not found'}), [1]

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

A404

B400

C201

D403

Attempts:

3 left

💡 Hint

Common Mistakes

Using 201 which means Created

Using 400 which means Bad Request

404 means the requested resource was not found on the server.

3fill in blank

hard

Fix the error in the code to return a 201 Created status after adding a new resource.

Flask

from flask import Flask, jsonify, request
app = Flask(__name__)

@app.route('/add', methods=['POST'])
def add_item():
    data = request.json
    # pretend we add the item here
    return jsonify({'message': 'Item added'}), [1]

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

A400

B200

C201

D500

Attempts:

3 left

💡 Hint

Common Mistakes

Using 200 which means OK but not specific for creation

Using 400 which means Bad Request

201 means a new resource was successfully created.

4fill in blank

hard

Fill both blanks to return a 400 Bad Request status with a JSON error message.

Flask

from flask import Flask, jsonify, request
app = Flask(__name__)

@app.route('/submit', methods=['POST'])
def submit():
    data = request.json
    if not data or 'name' not in data:
        return jsonify({'error': [1]), [2]

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

A'Missing name field'

B400

C200

D'Success'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 200 which means OK

Using a success message instead of an error

400 means the client sent a bad request. The error message explains the problem.

5fill in blank

hard

Fill all three blanks to return a 403 Forbidden status with a JSON error message and a custom header.

Flask

from flask import Flask, jsonify, make_response
app = Flask(__name__)

@app.route('/admin')
def admin():
    response = make_response(jsonify({'error': [1]), [2])
    response.headers['X-Reason'] = [3]
    return response

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

A'Access denied'

B403

C'User not authorized'

D200

Attempts:

3 left

💡 Hint

Common Mistakes

Using 200 which means OK

Using wrong or missing error messages

403 means the user is forbidden from accessing the resource. The JSON and header explain why.