Response object creation in Flask - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Response object in Flask?

A Response object in Flask represents the HTTP response sent back to the client. It contains data like the content, status code, and headers.

beginner

How do you create a simple Response object with custom text in Flask?

You can create it by using <code>from flask import Response</code> and then calling Response('Your text here'). For example: <code>return Response('Hello, world!')</code>

intermediate

Which parameters can you set when creating a Response object in Flask?

You can set the response body (data), status code (like 200, 404), and headers (like content-type). For example: Response('data', status=404, headers={'Content-Type': 'text/plain'})

intermediate

What is the difference between returning a string and returning a Response object in Flask?

Returning a string lets Flask create a default Response object for you. Returning a Response object gives you full control over status codes and headers.

beginner

How can you set a custom HTTP status code using a Response object in Flask?

Pass the status code as the status parameter when creating the Response. Example: Response('Not found', status=404)

Which import is needed to create a Response object in Flask?

A from flask import Response

B import Response from flask

C from flask.response import ResponseObject

D import flask.Response

The correct import is from flask import Response.

What is the default HTTP status code if you return a string from a Flask view?

A 404

B 500

C 200

D 302

Flask uses status code 200 (OK) by default when returning a string.

How do you add a custom header to a Response object in Flask?

A Set headers after returning the response

B Use the headers parameter with a dictionary when creating Response

C Headers cannot be customized in Flask

D Use a special Flask header function

You add headers by passing a dictionary to the headers parameter in Response.

Which of these is a valid way to create a Response with status 201?

A Response('Created', status=201)

B Response('Created', code=201)

C Response('Created', http_status=201)

D Response('Created', status_code=201)

The correct parameter name is status.

If you want to return JSON data with a Response object, what should you set in headers?

A {'Content-Type': 'application/xml'}

B {'Content-Type': 'text/html'}

C {'Content-Type': 'text/plain'}

D {'Content-Type': 'application/json'}

JSON responses should have the header Content-Type: application/json.

Explain how to create a Response object in Flask with custom text, status code, and headers.

Think about the parameters Response accepts.

Describe the difference between returning a string and returning a Response object in a Flask view function.

Consider control over HTTP details.