Recall & Review
beginner
What is error handling in Flask?
Error handling in Flask means catching and managing errors that happen during a web request, so the app can respond gracefully instead of crashing.
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beginner
Why is error handling important in web applications?
It helps keep the app running smoothly, gives users clear messages, and prevents sensitive info from being shown when something goes wrong.
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intermediate
How does Flask let you handle errors?Flask uses error handlers with decorators like @app.errorhandler to catch specific errors and return custom responses.
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beginner
What happens if you don’t handle errors in Flask?
The app may crash or show default error pages that confuse users and expose technical details.
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beginner
Give an example of a common error handled in Flask apps.
A 404 Not Found error when a user visits a page that doesn’t exist. Handling it lets you show a friendly message instead of a plain error.
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What decorator does Flask use to handle errors?
✗ Incorrect
Flask uses @app.errorhandler to define functions that handle specific errors.
Why should you handle errors in a Flask app?
✗ Incorrect
Handling errors helps keep the app running and shows users clear messages.
What is a common error you might handle in Flask?
✗ Incorrect
404 Not Found is a common HTTP error handled in Flask apps.
What can happen if errors are not handled in Flask?
✗ Incorrect
Without error handling, the app may crash or show unfriendly error pages.
Which of these is NOT a benefit of error handling?
✗ Incorrect
Error handling actually helps debugging by managing errors clearly.
Explain why error handling is important in Flask web applications.
Think about what happens when something goes wrong in a website.
You got /4 concepts.
Describe how Flask allows you to handle errors in your app.
Focus on the Flask feature that catches errors.
You got /4 concepts.