Safe access using get() in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to safely get the value for key 'name' from the dictionary.

Python

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

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

Aget

Bpop

Ckeys

Dvalues

Attempts:

3 left

💡 Hint

Common Mistakes

Using person['name'] which causes error if key is missing

Using pop which removes the key from dictionary

The get method safely retrieves the value for the given key without causing an error if the key is missing.

2fill in blank

medium

Complete the code to get the value for 'city' with a default of 'Unknown'.

Python

location = {'country': 'USA'}
city = location.[1]('city', 'Unknown')
print(city)

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

Aget

Bpop

Csetdefault

Dupdate

Attempts:

3 left

💡 Hint

Common Mistakes

Using pop which removes the key

Using setdefault which adds the key if missing

The get method can take a second argument as a default value if the key is not found.

3fill in blank

hard

Fix the error by completing the code to safely access 'score' from the dictionary.

Python

results = {'player': 'Bob'}
score = results.[1]('score')
print(score)

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

Aclear

Bget

Cpopitem

Dkeys

Attempts:

3 left

💡 Hint

Common Mistakes

Using popitem which removes an arbitrary item

Using keys which returns all keys, not a value

Using get avoids KeyError when 'score' key is missing.

4fill in blank

hard

Fill both blanks to create a dictionary of word lengths only for words longer than 3 letters.

Python

words = ['apple', 'bat', 'carrot', 'dog']
lengths = {word: [1] for word in words if [2] > 3}

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

Alen(word)

Bword

Attempts:

3 left

💡 Hint

Common Mistakes

Using word instead of len(word) for length

Checking word instead of its length in condition

Use len(word) to get length and filter words with length greater than 3.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase keys and values only if value is positive.

Python

data = {'a': 1, 'b': -2, 'c': 3}
result = { [1]: [2] for k, v in data.items() if v [3] 0 }

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

Ak.upper()

Bv

C>

Dk

Attempts:

3 left

💡 Hint

Common Mistakes

Using original key instead of uppercase

Using wrong comparison operator

Using key instead of value for dictionary values

Keys are converted to uppercase with k.upper(), values are v, and only positive values are included using >.