Question 30: Which code snippet represents a Pub/Sub implementation?

1import requests
2
3response = requests.get('https://some-api')
4print(response.json())

1from flask import Flask, request
2
3app = Flask(__name__)
4
5@app.route('/server-route, methods=['POST'])
6def server_route():
7    data = request.json
8    print(data)
9    return 'OK', 200

1from flask import Flask, Response
2import time
3
4app = Flask(__name__)
5
6def stream():
7    while True:
8        time.sleep(5)
9        yield f'data: The time is {time.strftime("%Y-%m-%d %H:%M:%S")}\n\n'
10
11@app.route('/server-route')
12def server_route():
13    return Response(stream(), mimetype='text/event-stream')
14
15if __name__ == '__main__':
16    app.run(debug=True, port=5000)

1import time
2import requests
3
4while True:
5    response = requests.get('https://some-endpoint')
6    print(response.json())
7    time.sleep(10)