Multiple Choice Questions: Functions in Python for High School

📚 Quick Study Guide: Python Functions

• 💡 Functions are blocks of organized, reusable code that perform a single, related action.
• ✍️ They help break our program into smaller, modular chunks, making code easier to manage and debug.
• ⚙️ You define a function using the def keyword, followed by the function name, parentheses (), and a colon :.
• ➡️ Parameters are values passed into the function definition, while arguments are the actual values passed when calling the function.
• ↩️ The return statement is used to send a value back from the function to the caller. If no return is specified, the function implicitly returns None.
• 📞 To execute a function, you simply 'call' it by its name followed by parentheses, e.g., my_function().
• 🛡️ Functions promote code reusability, meaning you write a piece of code once and use it multiple times.

🧠 Practice Quiz: Python Functions

1. Which keyword is used to define a function in Python?

1. function
2. define
3. def
4. func

2. What is the primary purpose of using functions in programming?

1. To make the code run faster.
2. To improve code readability and reusability.
3. To add comments to the code.
4. To declare variables.

3. Consider the following Python code:
def greet(name):
print("Hello, " + name)
greet("Alice")
What will be the output?

1. Hello, name
2. Hello, Alice
3. greet("Alice")
4. Error

4. What does a function implicitly return if no return statement is used?

1. 0
2. An empty string ""
3. None
4. True

5. Which of the following is an example of calling a function named calculate_area that takes two arguments?

1. def calculate_area(length, width):
2. calculate_area(5, 10)
3. return calculate_area
4. calculate_area = function(5, 10)

6. What are the variables listed inside the parentheses of a function definition called?

1. Arguments
2. Parameters
3. Returns
4. Values

7. If a function is defined without any parameters, how is it called?

1. my_function[]
2. my_function{}
3. my_function()
4. call my_function