Raising errors — making your code fail loudly on purpose (step 8/9) · error handling

promptdojo_›phase 02 · real python›ch 09 · error handling

lesson 3 of 3 · raising errors — making your code fail loudly on purposestep 8 / 9

Write a function validate_age(age) that:

Returns age unchanged when age is an integer between 0 and 120 (inclusive).
Raises ValueError with the message f"age out of range: {age}" otherwise.

Then call it three times inside try/except ValueError as err: print(err) blocks so the output below prints. Use print(validate_age(...)) for the happy-path call.

Expected output:

30
age out of range: -5
age out of range: 200

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Write a function validate_age(age) that:

Returns age unchanged when age is an integer between 0 and 120 (inclusive).
Raises ValueError with the message f"age out of range: {age}" otherwise.

Then call it three times inside try/except ValueError as err: print(err) blocks so the output below prints. Use print(validate_age(...)) for the happy-path call.

Expected output:

30
age out of range: -5
age out of range: 200

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Raising errors — making your code fail loudly on purpose — step 8 of 9

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