Assignment, strings, integers, floats and booleans. Learn through short examples, practical tasks and targeted questions.
Variables name values so a program can use or update them later. A string stores text, an integer stores whole numbers, a float stores decimal numbers and a Boolean stores True or False. Read each assignment carefully, then predict the type and value before printing them.
Watch out: Putting a number in quotation marks creates a string. That changes what operations the program can perform with the value.
Assignment, strings, integers, floats and booleans. Study the code and predict what it does before running it. Change a value or string and observe how the output changes.
name = "Sam"
age = 15
height = 1.72
print(name, age, height)Create variables for a product name, quantity and price. Display the details and the total price.
Plan your inputs, processing and outputs. Write the code in Mu, IDLE or PyCharm; test at least three cases.
product = "Notebook"
quantity = 3
price = 2.50
print(product, quantity, price)
print("Total:", quantity * price)Identify the problem and explain how to fix it before revealing the answer.
score == 10
print(score)score = 10
print(score)Compare the two snippets. Identify the changed line, run the corrected version and explain the effect.
Extension: Improve your solution to deal with unexpected input, add a second feature or display results more clearly.
Reflect: What was the hardest part? What would you test if someone else used your program?
Want extra practice? Try interactive Python tracing and debugging questions →
Trace assignments in order, especially when a variable is updated. If score starts at 4 and the program executes score = score + 3 twice, write the value after each line before checking the result.
Check: Assignment evaluates the expression and stores the resulting value under the variable name, replacing its previous value.