Upgrade PyQuiz — Control Flow

Add right/wrong feedback, a quiz loop with streak multipliers, functions, and crash-proof input.

Beginner

4 hours

4 lessons

Course Content

23 chapters across 4 lessons

Right or Wrong

Add feedback, score tracking, and grade messages to the quiz

4 chapters

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Making Decisions

Continue

Understand why programs need to run different code based on what happens

Check If Correct

Use an if statement to print "Correct!" when the player's answer is right

Handle Wrong Answers

Add an else branch to print feedback when the player's answer is wrong

Lesson Complete

You finished Right or Wrong — recap what you built and what comes next

The Quiz Loop

Loop through a question bank, track a streak, and add a play-again menu

7 chapters

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What Are Loops?

Understand why the quiz needs to repeat code for each question

Ask Three Questions

Replace the single hardcoded question with a list and loop through all three

Track the Score

Add score and total variables to count how many questions the player got right

Score Thresholds

Use elif to show a grade message based on the player's final score

Score and Streak

Track a running streak and show a hot streak message after three correct answers in a row

Keep Playing

Wrap the quiz in a while loop so the player can play again without restarting the script

Lesson Complete

You finished The Quiz Loop — recap what you built and what comes next

Quiz Functions

Extract ask_question, show_results, and run_quiz into reusable functions

7 chapters

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Why Functions?

Understand why extracting code into named functions makes programs easier to read and change

Define ask_question

Extract the question display, input, and feedback into a function

Return a Value

Add return is_correct so the caller can update the score based on the result

show_results

Extract the score display and grade message into a show_results function

Define run_quiz

Extract the round logic into run_quiz and use a default parameter for the question list

Call run_quiz

Replace the while loop body with a single run_quiz() call

Lesson Complete

You finished Quiz Functions — recap what you built and what comes next

Handle Bad Input

Catch runtime errors with try/except and add a retry loop so bad input re-prompts instead of crashing

5 chapters

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What Are Errors?

Understand runtime errors and see what happens when the quiz crashes on bad input

Catch Invalid Input

Wrap int() in a try/except block so bad input prints a message instead of crashing

Keep Asking

Replace return False with a retry loop so invalid input re-prompts instead of counting as wrong

Validate the Range

Add a range check so answers outside 1-4 re-prompt instead of being accepted

Lesson Complete

You finished Handle Bad Input — recap what you built and what comes next