[Solved] Which statement about extending built-in exceptions is TRUE? - Ans: If you don't call super().__init__, the exception message may be lost | Python

Python - Custom Exceptions

Which statement about extending built-in exceptions is TRUE?

ACustom exceptions must always override __str__ to work

BIf you don't call super().__init__, the exception message may be lost

CYou cannot add new attributes to custom exceptions

DCustom exceptions cannot be caught by except blocks

Step-by-Step Solution

Solution:

Step 1: Analyze each statement
B is false because overriding __str__ is optional. C is false because you can add attributes. D is false because custom exceptions are caught normally.
Step 2: Understand importance of super().__init__
Not calling super().__init__ can cause the message to be missing from the exception instance.
Final Answer:
If you don't call super().__init__, the exception message may be lost -> Option B
Quick Check:
super().__init__ preserves exception message [OK]

Quick Trick: Call super().__init__ to keep message; __str__ override is optional [OK]

Common Mistakes:

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Which statement about extending built-in exceptions is TRUE?