Chapter Practice Arena

Working with Collections Problems

Targeted practice challenges specifically curated for this chapter. Inspect hints, verify outputs, and check Pythonic solutions.

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Showing 6 challenges · 20 total · Page 1 of 4

#1beginnerDictionaries: Keys and Values

Start with user = {'name': 'Ari'}. Add the key 'active' with the value True, then update the name to 'Riya'. Print the final dictionary.

Starter Code

# Start with the provided dictionary

Expected Output:{'name': 'Riya', 'active': True}

#2beginnerSets and Set Operations

Create the sets {2, 4, 6} and {4, 6, 8}. Print their common elements in ascending order.

Starter Code

# Create the sets and find their intersection

Expected Output:[4, 6]

#3beginnerLists: Creating and Indexing

Create numbers = [4, 8, 12] and print the middle element using its index.

Starter Code

numbers = [4, 8, 12]

# Print the middle element

Expected Output:8

#4beginnerDictionaries: Keys and Values

Given prices = {'pen': 10, 'book': 50}, use a for loop and items() to print each item name followed by its price, separated by one space.

Starter Code

prices = {'pen': 10, 'book': 50}
# Loop through the key-value pairs

Expected Output:pen 10 book 50

#5beginnerList Methods and Mutation

Start with ['red', 'green', 'blue']. Remove the last element using pop(), store the returned value in removed, then print removed and the updated list on separate lines.

Starter Code

# Use pop() and print the returned value and list

Expected Output:blue ['red', 'green']

#6beginnerList Methods and Mutation

Create a list containing 3 and 6. Append 9 to the list and print the updated list.

Starter Code

# Create the list and append 9

Expected Output:[3, 6, 9]