G object for request-scoped data in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flask global object used for request-scoped data.

Flask

from flask import [1]

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

Ag

Brequest

Csession

Dapp

Attempts:

3 left

💡 Hint

Common Mistakes

Importing request instead of g.

Using session which is for user sessions, not request data.

The g object in Flask is used to store data during a request. Import it from flask.

2fill in blank

medium

Complete the code to store a value in the Flask g object during a request.

Flask

from flask import g

def before_request():
    g.[1] = 'user123'

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

Auser_id

Bsession_id

Capp_name

Drequest_data

Attempts:

3 left

💡 Hint

Common Mistakes

Using session_id which is not typically stored in g.

Using unrelated names like app_name.

You can add any attribute to g. Here, user_id is a common example to store user info during a request.

3fill in blank

hard

Fix the error in accessing the g object attribute inside a view function.

Flask

from flask import g

@app.route('/')
def index():
    user = g.[1]
    return f"Hello, {user}!"

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

Auserid

BuserId

CUser_id

Duser_id

Attempts:

3 left

💡 Hint

Common Mistakes

Using camelCase or different casing like userId or User_id.

Using all lowercase but missing underscore like userid.

Attribute names in g are case-sensitive. If you stored user_id, you must access it exactly as g.user_id.

4fill in blank

hard

Fill both blanks to correctly check if an attribute exists in g and use it.

Flask

from flask import g

@app.route('/profile')
def profile():
    if hasattr(g, '[1]'):
        user = getattr(g, '[2]')
    else:
        user = 'Guest'
    return f"Profile: {user}"

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

Auser_id

Busername

Cuser

Dprofile_id

Attempts:

3 left

💡 Hint

Common Mistakes

Using different attribute names in hasattr and getattr.

Using attribute names not set in g.

To safely access an attribute in g, check with hasattr and then get it with getattr using the same attribute name.

5fill in blank

hard

Fill both blanks to create a dictionary comprehension that stores lengths of strings in g if length is greater than 3.

Flask

from flask import g

words = ['apple', 'bat', 'carrot']
g.lengths = {word: len(word) for word in words if len(word) [1] 3 and 'a' [2] word}

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

A:

B>

Cin

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using = instead of : in dictionary comprehension.

Using == instead of > for length comparison.

Using == instead of in to check substring presence.

The dictionary comprehension needs a colon : between key and value, a greater than sign > to check length, and in to check if 'a' is in the word.