Serving sensor data as JSON API in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flask module.

Raspberry Pi

from [1] import Flask

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

AFlask

Bflask

Cjson

Drequests

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Flask' instead of 'flask' as module name.

The Flask module is imported using from flask import Flask.

2fill in blank

medium

Complete the code to create a Flask app instance.

Raspberry Pi

app = [1](__name__)

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

AFlask

Bapp

Cflask

Djsonify

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'flask' instead of 'Flask'.

The Flask app instance is created by calling Flask(__name__).

3fill in blank

hard

Fix the error in the route decorator to serve sensor data at '/sensor'.

Raspberry Pi

@app.route('[1]')
def sensor_data():
    return {'temperature': 22.5, 'humidity': 60}

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

A/sensor

B/Sensor

Csensor

D/data

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the leading slash.

Using uppercase letters in the path.

The route must start with a slash and match the URL path exactly, so '/sensor' is correct.

4fill in blank

hard

Fill both blanks to return JSON response using Flask's jsonify function.

Raspberry Pi

from flask import Flask, [1]

@app.route('/sensor')
def sensor_data():
    data = {'temperature': 22.5, 'humidity': 60}
    return [2](data)

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

Ajsonify

Bjson

CFlask

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'json' instead of 'jsonify'.

Not importing jsonify.

The jsonify function is imported and used to return JSON responses in Flask.

5fill in blank

hard

Fill all three blanks to run the Flask app on host '0.0.0.0' and port 5000.

Raspberry Pi

if __name__ == '__main__':
    app.run(host=[1], port=[2], debug=[3])

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

A'127.0.0.1'

B5000

CTrue

D'0.0.0.0'

Attempts:

3 left

💡 Hint

Common Mistakes

Using '127.0.0.1' limits access to localhost only.

Setting debug to False during development.

To make the Flask app accessible on the network, use host '0.0.0.0', port 5000, and enable debug mode with True.