Why sessions manage user state in Flask - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flask session object.

Flask

from flask import Flask, [1]

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

Arequest

Bredirect

Csession

Drender_template

Attempts:

3 left

💡 Hint

Common Mistakes

Importing 'request' instead of 'session'.

Forgetting to import 'session' and trying to use it directly.

The session object is imported from Flask to manage user state across requests.

2fill in blank

medium

Complete the code to set a value in the session dictionary.

Flask

session[[1]] = 'user123'

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

A'token'

B'password'

C'email'

D'username'

Attempts:

3 left

💡 Hint

Common Mistakes

Using keys like 'password' which should not be stored in session.

Using keys unrelated to user identity.

We store the user's name under the key 'username' in the session to remember who is logged in.

3fill in blank

hard

Fix the error in the code to retrieve the username from the session safely.

Flask

user = session.get([1], None)

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

A'username'

B'user'

C'id'

D'name'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different key than what was stored causes None to be returned.

Not using get and risking a KeyError.

The key 'username' matches what was stored in the session, so we retrieve it safely with get.

4fill in blank

hard

Fill both blanks to check if a user is logged in and redirect if not.

Flask

if [1] not in session:
    return [2]('/login')

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

A'username'

Bredirect

Crender_template

D'user_id'

Attempts:

3 left

💡 Hint

Common Mistakes

Checking the wrong key in session.

Using render_template instead of redirect.

We check if 'username' is in session to know if the user is logged in. If not, we redirect to the login page.

5fill in blank

hard

Fill all three blanks to clear the session and log the user out.

Flask

from flask import [1]

@app.route('/logout')
def logout():
    [2].clear()
    return [3]('/login')

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

Asession

Credirect

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to import session.

Using request instead of session.

Not redirecting after clearing session.

We import session to clear all stored user data, then use redirect to send the user to the login page.