Dictionary use cases in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a dictionary with keys 'a' and 'b' and values 1 and 2.

Python

my_dict = {'a': [1], 'b': 2}

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

A1

B'1'

C3

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string '1' instead of number 1

Using wrong number like 3 or 0

The value for key 'a' should be the number 1, not a string or other number.

2fill in blank

medium

Complete the code to access the value of key 'name' from the dictionary.

Python

person = {'name': 'Alice', 'age': 30}
print(person[1])

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A['Name']

B['name']

C['age']

D['NAME']

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong key case

Using key 'age' instead of 'name'

To get the value of 'name', use the exact key 'name' with correct case.

3fill in blank

hard

Fix the error in the code to add a new key 'city' with value 'Paris' to the dictionary.

Python

data = {'country': 'France'}
data[1] = 'Paris'
print(data)

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A('city')

B.append('city')

C['city']

D.add('city')

Attempts:

3 left

💡 Hint

Common Mistakes

Using append or add methods which are for lists or sets

Using parentheses instead of brackets

To add a new key-value pair, use square brackets with the new key and assign the value.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps numbers to their squares for numbers greater than 2.

Python

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

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A**

B>

C<

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+' instead of '**' for squaring

Using '<' instead of '>' for filtering

Use '**' to square a number and '>' to filter numbers greater than 2.

5fill in blank

hard

Fill all three blanks to create a dictionary from a list of tuples, including only items with value greater than 10.

Python

items = [('apple', 5), ('banana', 15), ('cherry', 20)]
result = [1]: [2] for [3] in items if [2] > 10}

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

Afruit

Bcount

Cfruit, count

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using single variable instead of unpacking

Using wrong variable names

Not filtering values correctly

Use 'fruit' as key, 'count' as value, and unpack tuples with 'for fruit, count'.