Quiz: QZ-20260506-24360

Quiz Details

QZ-20260506-24360

Topics:

Functions in python

Difficulty: Level 4 - Hard

Questions: 15

Language: English (English)

Generated: May 06, 2026 at 03:28 PM

Generated by: NANZIRI PATIENCE

Instructions: Select an answer for each question and click "Check Answer" to see if you're correct. Then view the explanation to learn more!

1 What is the output of the following code: `def f(x): return x**2; print(f(3))`?

A) 6

B) 3

C) 9

D) None

Correct Answer: C
Explanation: The function `f` squares the input, so `f(3)` returns 3 squared, which is 9.

2 What does the keyword 'global' allow you to do within a function?

A) Create global variables.

B) Modify global variables.

C) Access global variables only.

D) Delete global variables.

Correct Answer: B
Explanation: Using 'global' allows a function to modify a variable defined at the module level, providing access to the global variable.

3 Which of the following will raise an error when called?

A) def func(a, b=2): return a + b; func(1, 3)

B) def func(a=1): return a; func()

C) def func(*args): return args; func(1, 2, 3)

D) def func(a, b): return a + b; func(1)

Correct Answer: D
Explanation: The function `func` requires two arguments, and calling it with only one argument will raise a TypeError.

4 What will be the output of the following code: `def greet(name): return f'Hello, {name}!'; print(greet('Alice'))`?

A) greet(Alice)

B) Hello, Alice!

C) Hello, name!

D) None

Correct Answer: B
Explanation: The function `greet` formats a string with the name provided, resulting in 'Hello, Alice!'.

5 What is the purpose of the *args syntax in a function definition?

A) To allow passing a variable number of positional arguments.

B) To pass keyword arguments.

C) To pass a fixed number of arguments.

D) To create default arguments.

Correct Answer: A
Explanation: '*args' allows you to pass a variable number of positional arguments to a function, which are accessible as a tuple.

6 Which of the following statements is true regarding lambda functions in Python?

A) They can have statements.

B) They are limited to a single expression.

C) They can have multiple expressions.

D) They cannot return values.

Correct Answer: B
Explanation: Lambda functions in Python are limited to a single expression, making them concise for simple operations.

7 What is the output of the following code snippet: `def add(x, y=5): return x + y; print(add(2))`?

A) 2

B) None

C) 5

D) 7

Correct Answer: D
Explanation: The function adds the first argument (2) to the default value of the second argument (5), resulting in 7.

8 What will be the output of the following code: `def func(a, b=2, c=3): return a + b + c; print(func(1, c=4))`?

A) 7

B) 5

C) 6

D) None

Correct Answer: A
Explanation: The function adds 1 (a) + 2 (default b) + 4 (provided c), resulting in 7.

9 In Python, what does the term 'higher-order function' refer to?

A) A function that is defined within another function.

B) A function that returns another function.

C) Both A and B.

D) A function that takes another function as an argument.

Correct Answer: C
Explanation: A higher-order function is one that can take other functions as arguments or return them as results.

10 What is the output of the following code: `def foo(a, b=[]): b.append(a); return b; print(foo(1)); print(foo(2))`?

A) [1, 2], [1, 2]

B) [1], [2]

C) [1], [1, 2]

D) [1, 2], [2]

Correct Answer: C
Explanation: The list `b` is mutable and retains its state between function calls, so the second call appends to the same list.

11 What is the purpose of the `return` statement in a function?

A) To exit a function and return a value to the caller.

B) To define the function's parameters.

C) To output a value to the console.

D) To declare a function.

Correct Answer: A
Explanation: The `return` statement exits the function and sends a value back to where the function was called.

12 What will be the output of the following code: `def mystery(a, b): return a if a > b else b; print(mystery(10, 20))`?

A) None

B) Error

C) 10

D) 20

Correct Answer: D
Explanation: The function returns the greater of the two arguments, and since 20 is greater than 10, it returns 20.

13 Which of the following correctly defines a function that returns the square of a number?

A) def square(x): return x * x

B) All of the above

C) def square(x): return pow(x, 2)

D) def square(x): return x ** 2

Correct Answer: B
Explanation: All provided options are valid ways to define a function that returns the square of a number in Python.

14 In Python, how can a function provide multiple return values?

A) By using a tuple.

B) By using a list.

C) By using a dictionary.

D) All of the above.

Correct Answer: D
Explanation: A function can return multiple values using any of these data structures, which can then be unpacked.

15 What will be the output of the following code: `def outer(): def inner(): return 'Inner'; return inner; print(outer()())`?

A) Error

B) outer

C) None

D) Inner

Correct Answer: D
Explanation: The `outer` function returns the `inner` function, which is then called immediately, returning 'Inner'.

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Quiz Details

QZ-20260506-24360

1 What is the output of the following code: `def f(x): return x**2; print(f(3))`?

2 What does the keyword 'global' allow you to do within a function?

3 Which of the following will raise an error when called?

4 What will be the output of the following code: `def greet(name): return f'Hello, {name}!'; print(greet('Alice'))`?

5 What is the purpose of the *args syntax in a function definition?

6 Which of the following statements is true regarding lambda functions in Python?

7 What is the output of the following code snippet: `def add(x, y=5): return x + y; print(add(2))`?

8 What will be the output of the following code: `def func(a, b=2, c=3): return a + b + c; print(func(1, c=4))`?

9 In Python, what does the term 'higher-order function' refer to?

10 What is the output of the following code: `def foo(a, b=[]): b.append(a); return b; print(foo(1)); print(foo(2))`?

11 What is the purpose of the `return` statement in a function?

12 What will be the output of the following code: `def mystery(a, b): return a if a > b else b; print(mystery(10, 20))`?

13 Which of the following correctly defines a function that returns the square of a number?

14 In Python, how can a function provide multiple return values?

15 What will be the output of the following code: `def outer(): def inner(): return 'Inner'; return inner; print(outer()())`?

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