Q objects for complex queries in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Q from Django's models.

Django

from django.db.models import [1]

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

AF

BCount

CValue

DQ

Attempts:

3 left

💡 Hint

Common Mistakes

Importing F instead of Q

Forgetting to import Q

Importing from the wrong module

The Q object is imported from django.db.models to build complex queries.

2fill in blank

medium

Complete the code to filter books with title 'Django' or author 'Alice'.

Django

from django.db.models import Q
books = Book.objects.filter(Q(title='Django') [1] Q(author='Alice'))

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

Aand

B&

C|

Dor

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'and' or 'or' keywords instead of operators

Using '&' which means AND

Using Python logical operators instead of bitwise

Use the | operator to combine Q objects with OR logic.

3fill in blank

hard

Fix the error in combining Q objects to exclude books published before 2020.

Django

from django.db.models import Q
books = Book.objects.filter(~Q(published_year [1] 2020))

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

A<

B==

C>

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operator

Not negating the Q object properly

Using Python 'not' instead of '~'

The ~ operator negates the Q object. To exclude books published before 2020, use < inside Q.

4fill in blank

hard

Fill both blanks to filter users with first name 'John' and last name not 'Doe'.

Django

from django.db.models import Q
users = User.objects.filter(Q(first_name=[1]) [2] ~Q(last_name='Doe'))

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

A'John'

B|

C&

D'Jane'

Attempts:

3 left

💡 Hint

Common Mistakes

Using OR operator instead of AND

Using wrong string for first name

Not negating last name condition

Use 'John' as the first name and combine Q objects with & for AND logic.

5fill in blank

hard

Fill all three blanks to filter products with price greater than 100, category 'Books', and name containing 'Python'.

Django

from django.db.models import Q
products = Product.objects.filter(Q(price__[1]=100) [2] Q(category=[3]) & Q(name__icontains='Python'))

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

Agt

B&

C'Books'

Dlt

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'lt' instead of 'gt' for price

Using OR operator instead of AND

Not quoting the category string

Use gt for greater than, combine with & for AND, and use 'Books' as category string.