Set creation in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a set with the numbers 1, 2, and 3.

Python

my_set = [1]

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

A(1, 2, 3)

B[1, 2, 3]

C{1, 2, 3}

D"1, 2, 3"

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets [] creates a list, not a set.

Using parentheses () creates a tuple, not a set.

The curly braces {} create a set in Python. So {1, 2, 3} is a set with numbers 1, 2, and 3.

2fill in blank

medium

Complete the code to create an empty set.

Python

empty_set = [1]

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

A{}

Bset()

C[]

Dempty()

Attempts:

3 left

💡 Hint

Common Mistakes

Using {} creates an empty dictionary, not a set.

Using [] creates an empty list, not a set.

Using set() creates an empty set. Curly braces {} create an empty dictionary, not a set.

3fill in blank

hard

Fix the error in the code to create a set from a list.

Python

numbers = [1, 2, 3, 4]
my_set = [1]

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

A(numbers)

B{numbers}

C[numbers]

Dset(numbers)

Attempts:

3 left

💡 Hint

Common Mistakes

Using {numbers} tries to put the whole list inside a set, causing an error.

Using square or round brackets does not create a set.

The set() function converts a list into a set. Using curly braces around the list creates a set with one element (the list itself), which is not allowed because lists are unhashable.

4fill in blank

hard

Complete the code to create a set of squares for numbers 1 to 5.

Python

squares = { x**2 for x in range(1, 6) if x [1] 3 }

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

A{

B[

C>

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets creates a list, not a set.

Using the wrong comparison operator changes the filtered numbers.

The code creates a set of squares for numbers greater than 3. Curly braces with an expression create a set comprehension. The condition x > 3 filters numbers greater than 3.

5fill in blank

hard

Fill both blanks to create a set of uppercase letters from a list, filtering only letters after 'm'.

Python

letters = ['a', 'b', 'm', 'n', 'z']
result = [ letter for letter in letters if letter [1] 'm' ]
result = {x[2] for x in result}

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

A{letter.upper()}

B>

C.upper()

D[

Attempts:

3 left

💡 Hint

Common Mistakes

Using curly braces in the first line creates a set, not a list.

Using the wrong comparison operator filters wrong letters.

Forgetting to convert letters to uppercase.

The first line creates a list of letters after 'm'. The second line uses a set comprehension to convert each letter to uppercase. The .upper() method changes letters to uppercase.