Python Conditional Statements - Exercises

What you'll learn

• How to use if-elif-else statements to make decisions in Python
• How to compare values and check conditions
• How to check if an item exists in a list
• How to build interactive programs that respond to user input

:information_source: Before you start: Click this link and make a copy of the Colab Notebook to your Google Drive for coding.

:computer: Question One: Badminton Score Checker

Time estimate: 10 minutes

Create a program that determines the winner of a badminton game based on player scores.

Steps to complete:

1. Get player scores:

   • Ask the user to enter Player 1's score
   • Ask the user to enter Player 2's score
   • Store these in variables named player1 and player2

2. Convert the inputs:

   • Use int() to convert the string inputs to numbers

3. Check who wins using if-elif-else:

   • Condition 1: If Player 1's score > Player 2's score -> Player 1 wins
   • Condition 2: If Player 2's score > Player 1's score -> Player 2 wins
   • Else: The game is a draw!

:bulb: Remember to use int() when getting input! Example:

python

player1 = int(input("Enter Player 1 score: "))

Expected output if Player 1 wins:

Expected output if the game is draw:

:computer: Question 2: Guess My Number Game

Time estimate: 10 minutes

Build a number guessing game where users try to guess a number from a secret list.

Steps to complete:

1. Create the secret number list:

   python

   numbers = [3, 2, 6, 12, 9, 18]
   

2. Get the user's guess:

   • Ask the user to guess a number
   • Store it in a variable called guess
   • Remember to use int() to convert the input

3. Check if the guess is correct:

   • Use an if-else statement
   • Check if the guess exists in the numbers list

:bulb: To check if an item is in a list, use the in keyword:

python

if guess in numbers:
    # The guess is correct!

Expected output if user's guess is correct:

Expected output if user's guess is wrong:

:rocket: Advanced Level

:computer: Question One: Museum Ticket System

Time estimate: 15 minutes

Create a ticket pricing system for a museum based on visitor age.

Ticket Categories:

Steps to complete:

1. Get visitor's age:

   • Ask the user to enter their age
   • Convert to integer using int()

2. Determine category and price:

   • Use if-elif-else statements
   • Check age ranges in order

3. Display the result:

   • Show both category and price

Expected output for a 15 years old user:

Expected output:

What is your age? 15
Adult, RM 20

:computer: Question 2: Grade Calculator

Time estimate: 20 minutes

Build a grading system that calculates total scores and assigns letter grades.

Score Components:

• Assignment: Maximum 20 marks
• Midterm: Maximum 20 marks
• Final Exam: Maximum 60 marks
• Total: 100 marks

Grading Scale:

Steps to complete:

1. Get scores from user:

   • Assignment score (out of 20)
   • Midterm score (out of 20)
   • Final exam score (out of 60)

2. Calculate total score:

   • Add all three scores together

3. Determine the grade:

   • Use if-elif-else statements
   • Check from highest grade to lowest

4. Display results:

   • Show total score
   • Show letter grade

:bulb: Tip Start checking from the highest grade (A) and work your way down. This makes your conditions simpler!

Assume the user's inputs are assignment: 18, midterm: 16, final exam: 55, the final output is:

Expected output:

Your total score is:89
You got A

:dart: Troubleshooting Tips

Common Issues:

1. "TypeError: '>' not supported"

   • Make sure you're using int() to convert inputs to numbers

2. Wrong output for edge cases

   • Check your comparison operators (>, >=, <, <=)
   • Test with boundary values (e.g., exactly 12, 13, 60 for the museum problem)

3. "NameError: name is not defined"

   • Check your variable names match exactly
   • Make sure you've created variables before using them

:warning: Warning

:emoji: Submission Instructions

Important: Review all your code and test with different inputs before submitting!

1. Make sure your Colab notebook is saved
2. Test each question with the example inputs
3. Click the submission link below
4. Follow the form instructions carefully

:link: Submit your exercise here

Submission deadline: Check with your instructor