Python Functions Exercises

What you'll learn

• How to create and call functions in Python
• Working with function parameters and default values
• Using return statements in functions
• Passing arguments to functions using different methods

Estimated time: 30-40 minutes

Getting Started

:computer: Coding Setup:

1. Click the link here
2. Make a copy of the Colab Notebook into your Google Drive
3. Rename your copy with your name (e.g., "Functions_Exercise_YourName")

:bulb: Make sure you're signed in to your Google account before clicking the link!

Question One: Basic Function Creation

Time estimate: 5 minutes

:computer: Your Task:

1. Create a function named welcome1
2. Make the function print the message "Hi, welcome to Telebort!" when called
3. Call the function to test it

Steps to follow:

1. Define the function using def welcome1():
2. Inside the function, use print() to display the message
3. Call the function by typing its name with parentheses

python

welcome1()

Expected output:

output

Hi, welcome to Telebort!

Question 2: Functions with Default Parameters

Time estimate: 8 minutes

:computer: Your Task:

1. Create a function named welcome2 with a parameter that has a default value
2. When called without arguments: print "Hi, welcome to Telebort!"
3. When called with a name argument: print "<name>, welcome to Telebort!"
4. Test the function both ways

Steps to follow:

1. Define the function with a parameter (e.g., def welcome2(name=None):)
2. Use an if statement to check if a name was provided
3. Print the appropriate message based on the condition
4. Call the function twice - once without arguments, once with your name tip Hint: You can set a default parameter value like this: def function_name(parameter=default_value):

welcome2()
welcome2("Chong Wei")

Expected output:

Hi, welcome to Telebort!
Chong Wei, welcome to Telebort!

Question 3: Functions with Return Values

Time estimate: 7 minutes

:computer: Your Task:

1. Create a function named multiple that takes two parameters: num1 and num2
2. Make the function return the product of these two numbers
3. Call the function and print the result

Steps to follow:

1. Define the function: def multiple(num1, num2):
2. Calculate the product inside the function
3. Use return to send the result back
4. Call the function with test values and print the output

:bulb: Remember: return sends a value back from the function, while print() just displays it. You'll need to print the returned value when you call the function!

python

print(multiple(2,3))

Expected output:

output

6

Question 4: Functions with Keyword Arguments

Time estimate: 10 minutes

:computer: Your Task:

1. Create a function named register with three parameters: name, age, and prog
2. The function should print three lines of information about the registration
3. Call the function using keyword arguments

Steps to follow:

1. Define the function: def register(name, age, prog):
2. Inside the function, print three lines:
   • Line 1: "Name: " followed by the name
   • Line 2: "Age: " followed by the age
   • Line 3: "You have successfully registered in Program " followed by the program letter
3. Call the function using keyword arguments (e.g., name="Your Name") tip Keyword arguments let you specify which value goes to which parameter by name, making your code clearer and allowing you to provide arguments in any order!

register(name="Chong Wei", age=15, prog="F")

Expected output:

Name: Chong Wei
Age: 15
You have successfully registered in Program F

Troubleshooting Common Issues

Function not defined error?

• Make sure you've run the cell containing your function definition before calling it
• Check for typos in the function name

Unexpected output?

• Verify you're using print() inside functions that need to display text
• For Question 3, make sure you're using return instead of print() inside the function

Syntax errors?

• Check that all function definitions end with a colon :
• Ensure proper indentation (4 spaces) for code inside functions

:information_source: Info :bulb: Pro tip: Test each function immediately after writing it to catch errors early!

Submission

:warning: Warning :warning: Before submitting:

1. Test all four functions to ensure they work correctly
2. Save your Colab notebook (File -> Save)
3. Double-check that your output matches the expected results
4. Make sure your notebook includes your name

:emoji:️ Ready to submit?

:link: Submit your exercise here

:information_source: Info :memo: Your submission helps us track your progress and provide personalized support if needed.