Must-do problems: Exception Handling

80 min · Beginner

These are the exception problems every Python beginner should be able to solve, from checking one quantity to a full sign-up form. Trace each one on paper with a bad input first, then check your program against every test.

What you will learn

Catch ValueError, ZeroDivisionError, KeyError and IndexError with a specific except block
Use else and finally to separate success and clean-up code
Raise ValueError and a custom exception to reject invalid data
Skip bad records and retry a failing step without crashing

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