Section 4A: Decompose the code using functions

Which keyword is used in Python to define a user-defined function?

• function

• def

• func

• define

What is the default return value of a function in Python if there is no return statement?

• 0

• None

• False

• ""

Which of the following is the correct way to invoke a function named `greet`?

• call greet

• greet()

• greet

• invoke greet

What does the `return` keyword do in a Python function?

• Exits the program

• Exits the function and optionally passes back a value

• Prints a value to the screen

• Continues to the next iteration

Which of the following best describes a generator in Python?

• A function that returns a list

• A function that uses `yield` to produce a sequence of values

• A function that only prints values

• A function that returns None

Given the following code, what will be printed? def foo(): pass print(foo())

• 0

• None

• foo

• Error

Which of the following statements about recursion is TRUE?

• A recursive function must always have a base case.

• Recursive functions cannot call themselves.

• Recursion is only possible with integers.

• Recursion is not allowed in Python.

Which of the following code snippets correctly defines a generator that yields numbers from 1 to 3?

• def gen(): yield 1 yield 2 yield 3

• def gen(): return [1, 2, 3]

• def gen(): print(1, 2, 3)

• def gen(): yield [1, 2, 3]

Consider the following function: def add(a, b): return a + b What will `print(add(2, 3))` output?

• 23

• 5

• None

• Error

Given the following code, what will be the output? def mystery(): return result = mystery() print(result is None)

• True

• False

• None

• Error