You want to create a custom exception InvalidAgeError that triggers when age is below 0 or above 120. Which approach best uses custom exceptions to handle this validation?
hard📝 Application Q15 of 15
Python - Custom Exceptions
You want to create a custom exception InvalidAgeError that triggers when age is below 0 or above 120. Which approach best uses custom exceptions to handle this validation?
APrint error message instead of raising exceptions
BUse only built-in ValueError without custom exceptions
CDefine <code>InvalidAgeError</code> inheriting Exception, raise it in a function checking age limits
DCatch all exceptions with a generic except block without custom exceptions
Step-by-Step Solution
Solution:
Step 1: Understand validation needs
Age must be checked for invalid values and a clear error raised if invalid.
Step 2: Use custom exception for clarity
Defining InvalidAgeError inheriting from Exception and raising it on invalid age clearly signals this specific error.
Step 3: Compare other options
Using only built-in exceptions or printing errors reduces clarity and control. Catching all exceptions generically hides specific issues.
Final Answer:
Define InvalidAgeError inheriting Exception, raise it in a function checking age limits -> Option C
Quick Check:
Custom exception for specific validation error [OK]
Quick Trick:Raise custom exceptions for clear, specific validation errors [OK]
Common Mistakes:
Relying only on built-in exceptions
Printing errors instead of raising
Using generic except blocks hiding issues
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