Adding and removing set elements in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add the element 5 to the set.

Python

numbers = {1, 2, 3, 4}
numbers.[1](5)
print(numbers)

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

Aadd

Bappend

Cinsert

Dextend

Attempts:

3 left

💡 Hint

Common Mistakes

Using list methods like append or insert on a set.

The add() method adds a single element to a set.

2fill in blank

medium

Complete the code to remove the element 3 from the set.

Python

numbers = {1, 2, 3, 4}
numbers.[1](3)
print(numbers)

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

Apop

Bremove

Cdiscard

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using pop() which removes an arbitrary element.

Using discard() which does not raise an error if element missing.

The remove() method removes a specific element from a set and raises an error if the element is not found.

3fill in blank

hard

Fix the error in the code to correctly add the element 10 to the set.

Python

my_set = {7, 8, 9}
my_set.[1](10)
print(my_set)

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

Aadd

Bappend

Cinsert

Dextend

Attempts:

3 left

💡 Hint

Common Mistakes

Using list methods like append or insert on a set.

Sets use add() to add elements, not list methods like append().

4fill in blank

hard

Fill both blanks to remove element 2 safely and add element 5 to the set.

Python

numbers = {1, 2, 3, 4}
numbers.[1](2)
numbers.[2](5)
print(numbers)

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

Adiscard

Bremove

Cadd

Dpop

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove which can cause errors if element is missing.

discard() removes an element without error if missing, and add() adds an element.

5fill in blank

hard

Fill all three blanks to add 'apple', remove 'banana' safely, and remove an arbitrary element.

Python

fruits = {'banana', 'cherry'}
fruits.[1]('apple')
fruits.[2]('banana')
removed = fruits.[3]()
print(fruits)
print('Removed:', removed)

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

Aadd

Bdiscard

Cpop

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Using remove instead of discard for safe removal.

Using pop incorrectly.

add() adds an element, discard() removes an element safely, and pop() removes and returns an arbitrary element.