Chapter Practice Arena

Functions 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

#1beginnerReturn Values

Write a function named announce() that prints Done but has no return statement. Store the result of announce() in result, then print result. Predict the exact output.

Starter Code

# Define announce(), call it, and print its result

Expected Output:Done None

#2beginnerReturn Values

Define double(n) so that it returns n multiplied by 2. Call double(6), store the returned value in result, and print result.

Starter Code

# Define double(n), call it with 6, and print the result

Expected Output:12

#3beginnerParameters and Arguments

Define greet(name) so that it prints Hi, followed by the supplied name. Call it using the keyword argument name='Sam'.

Starter Code

# Define greet(name) and call it with name='Sam'

Expected Output:Hi, Sam

#4beginnerParameters and Arguments

The call describe(name='Ira', 'Delhi') is invalid because a positional argument follows a keyword argument. Given the definition def describe(name, city): that prints the sentence 'Ira lives in Delhi.' when called with these values, rewrite the call correctly using one positional argument and one keyword argument.

Starter Code

def describe(name, city):
    print(f'{name} lives in {city}.')

# Write the corrected function call below

Expected Output:Ira lives in Delhi.

#5beginnerDefining and Calling Functions

Write the following program and explain why its output appears in this order: the program prints Start, displays 7 from the function call, and finally prints End.

Starter Code

# Define show_number(number), then print Start,
# call show_number(7), and print End

Expected Output:Start 7 End

#6intermediateDefault and Keyword Arguments

Complete add_item(item, items=None) so it creates a new list when items is None, appends item, and returns the list. Print the results of add_item('pen') and add_item('book').

Starter Code

def add_item(item, items=None):
    # Create a list when items is None
    # Append item and return the list
    pass

print(add_item('pen'))
print(add_item('book'))

Expected Output:['pen'] ['book']