Health check endpoints in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a basic Flask app with a health check endpoint at '/health'.

Flask

from flask import Flask
app = Flask(__name__)

@app.route('/health')
def health_check():
    return [1]

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

A"OK"

B200

Capp.run()

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Returning a status code number instead of a string

Calling app.run() inside the route function

The health check endpoint should return a simple string like "OK" to indicate the app is running.

2fill in blank

medium

Complete the code to run the Flask app only when the script is executed directly.

Flask

if __name__ == [1]:
    app.run(debug=True)

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

A__name__

B"main"

Capp

D"__main__"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'main' without underscores

Using __name__ without quotes

The special variable __name__ equals "__main__" when the script is run directly.

3fill in blank

hard

Fix the error in the health check route to return a JSON response with status code 200.

Flask

from flask import jsonify

@app.route('/health')
def health_check():
    return jsonify(status='OK'), [1]

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

A200

B"OK"

C500

D404

Attempts:

3 left

💡 Hint

Common Mistakes

Using string 'OK' instead of numeric status code

Using error codes like 404 or 500

HTTP status code 200 means the request was successful.

4fill in blank

hard

Fill both blanks to create a health check endpoint that returns JSON with a message and status code 200.

Flask

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

@app.route([1])
def health():
    return jsonify([2]='Healthy'), 200

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

A"/health"

B"/status"

Cmessage

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong route path

Using 'status' as JSON key instead of 'message'

The route should be '/health' and the JSON key should be 'message' for clarity.

5fill in blank

hard

Fill all three blanks to create a Flask app with a health check endpoint that returns JSON with 'status', 'uptime', and HTTP 200.

Flask

from flask import Flask, jsonify
import time

app = Flask(__name__)
start_time = time.time()

@app.route([1])
def health_check():
    uptime = time.time() - [2]
    return jsonify([3]='OK', uptime=uptime), 200

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

A"/health"

Bstart_time

Cstatus

D"/status"

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong route path

Using wrong variable for uptime calculation

Using incorrect JSON key

The route is '/health', uptime is calculated from start_time, and JSON key is 'status'.