Why lists are used in Python - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a list of fruits.

Python

fruits = [[1]]

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

A'apple', 'banana', 'cherry'

B'apple banana cherry'

C'apple'; 'banana'; 'cherry'

D'apple' + 'banana' + 'cherry'

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting commas between items

Using spaces instead of commas

Using plus signs to join items

Lists hold multiple items separated by commas inside square brackets.

2fill in blank

medium

Complete the code to access the first item in the list.

Python

first_fruit = fruits[[1]]

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

A1

B-1

C0

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 instead of 0 for the first item

Using negative indexes without understanding

List indexes start at 0, so the first item is at index 0.

3fill in blank

hard

Fix the error in the code to add an item to the list.

Python

fruits.[1]('orange')

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

Aadd

Bextend

Cinsert

Dappend

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'add' which is not a list method

Using 'extend' which expects an iterable

Using 'insert' without specifying position

The append method adds a single item to the end of a list.

4fill in blank

hard

Fill both blanks to create a list of squares for numbers greater than 3.

Python

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

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

A**

B>

C<

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using multiplication instead of power

Using less than instead of greater than

Use ** to square numbers and > to filter numbers greater than 3.

5fill in blank

hard

Fill all three blanks to create a dictionary of uppercase words with their lengths if length is more than 4.

Python

result = [1]: [2] for word in words if len(word) [3] 4}

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

Aword.upper()

Blen(word)

C>

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using word instead of word.upper() for keys

Using < instead of > for filtering

Using word instead of len(word) for values

The dictionary keys are uppercase words, values are their lengths, filtered by length greater than 4.