Dictionary iteration in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print all keys in the dictionary.

Python

my_dict = {'a': 1, 'b': 2, 'c': 3}
for key in my_dict[1]:
    print(key)

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

A.keys()

B.items()

C.values()

D[]

Attempts:

3 left

💡 Hint

Common Mistakes

Using .values() instead of .keys() will give values, not keys.

Using .items() returns key-value pairs, not just keys.

Using .keys() lets you loop through all keys in the dictionary.

2fill in blank

medium

Complete the code to print all values in the dictionary.

Python

my_dict = {'x': 10, 'y': 20, 'z': 30}
for value in my_dict[1]:
    print(value)

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

A[]

B.values()

C.items()

D.keys()

Attempts:

3 left

💡 Hint

Common Mistakes

Using .keys() will give keys, not values.

Using .items() returns key-value pairs, not just values.

Using .values() lets you loop through all values in the dictionary.

3fill in blank

hard

Fix the error in the code to print keys and values.

Python

my_dict = {'name': 'Alice', 'age': 25}
for key, value in my_dict[1]:
    print(key, value)

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

A.keys()

B.values()

C[]

D.items()

Attempts:

3 left

💡 Hint

Common Mistakes

Using .keys() or .values() will cause unpacking errors.

Not using any method will cause a runtime error.

Using .items() returns key-value pairs, which can be unpacked in the loop.

4fill in blank

hard

Fill both blanks to create a dictionary of squares for even numbers only.

Python

numbers = [1, 2, 3, 4, 5]
squares = {num: num[1]2 for num in numbers if num [2] 2 == 0}

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

A**

B%

C//

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using + instead of ** will add instead of square.

Using // instead of % will not correctly check even numbers.

The ** operator squares the number, and % checks if the number is even.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase keys and values greater than 10.

Python

data = {'a': 5, 'b': 15, 'c': 20}
result = [1]: [2] for [3], val in data.items() if val > 10}

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

Ak.upper()

Bval

Ck

Dv

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'v' instead of 'val' causes undefined variable error.

Not using .upper() keeps keys lowercase.

Use k.upper() to make keys uppercase, val for values, and k to unpack keys from items.