PCEP-30-02 4.4 Basics of Python Exception Handling PCEP-30 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A developer is creating a utility function `safe_divide(a, b)` that should not handle exceptions itself. The caller wants to catch ZeroDivisionError. What should the function do?

   • ACatch ZeroDivisionError and return None
   • BCatch ZeroDivisionError and print an error message
   • CPerform the division and let any exception propagate
   • DCatch ZeroDivisionError and re-raise it as a ValueError
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2. 7application · medium

   A function may raise either a LookupError or a KeyError. The developer wants to handle KeyError specifically and LookupError generically. Which except clause order is correct?

   • Aexcept (KeyError, LookupError): ...
   • Bexcept Exception: ... except KeyError: ...
   • Cexcept LookupError: ... except KeyError: ...
   • Dexcept KeyError: ... except LookupError: ...
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4. 8application · easy

   A script performs several operations that may raise different exceptions. The developer wants to handle a ValueError with a specific message, but let all other exceptions propagate. Which except clause is appropriate?

   • Aexcept (ValueError, TypeError):
   • Bexcept ArithmeticError:
   • Cexcept Exception:
   • Dexcept ValueError:
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5. 9application · medium

   A script converts a string to an integer and then divides by a user-provided number. The developer wants to handle both ValueError and ZeroDivisionError with different messages. Which except clause structure is correct?

   • Aexcept (ValueError, ZeroDivisionError): ...
   • Bexcept ValueError: ... except ZeroDivisionError: ...
   • Cexcept ZeroDivisionError: ... except ValueError: ...
   • Dexcept Exception: ... except ValueError: ...
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6. 10application · medium

   A developer writes a try block that may raise an ArithmeticError or a ZeroDivisionError. They want to handle ZeroDivisionError with a specific message and ArithmeticError with a generic message. Which except clause order is correct?

   • Aexcept ZeroDivisionError: ... except ArithmeticError: ...
   • Bexcept ArithmeticError: ... except ZeroDivisionError: ...
   • Cexcept Exception: ... except ZeroDivisionError: ...
   • Dexcept (ZeroDivisionError, ArithmeticError): ...
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