PCAP-31-03 2.1 Handle Errors Using Python-Defined Exceptions PCAP-31 Practice Questions (Page 2)

Questions 6–10

1. 6expert · medium

   A developer writes: try: risky() except LookupError: handle_lookup() except IndexError: handle_index(). A bug causes risky() to raise IndexError. Which handler runs?

   • ANeither handler; the exception propagates
   • Bhandle_lookup(), because IndexError is a subclass of LookupError and the first branch matches
   • CBoth handlers run in sequence
   • Dhandle_index(), because it is more specific
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2. 7foundation · easy

   What happens if an exception not listed in the tuple is raised in a grouped except clause?

   • AThe exception is converted to a generic Exception
   • BThe program crashes immediately
   • CThe exception is not caught by this clause and propagates to the next handler or the caller
   • DThe exception is caught and ignored silently
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4. 8foundation · easy

   What is the main benefit of using an else clause in a try/except block?

   • AIt makes the code run faster
   • BIt allows the try block to be omitted
   • CIt ensures that code runs only when no exception occurs, preventing it from being caught by except clauses
   • DIt catches exceptions from the else block
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5. 9foundation · easy

   Given the following code, which exception will be caught by the first except clause? try: raise ValueError('bad value') except Exception: print('Exception caught') except ValueError: print('ValueError caught')

   • ABoth Exception and ValueError
   • BValueError
   • CNo exception is caught
   • DException
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6. 10foundation · easy

   Which ordering of except clauses is correct to handle exceptions properly?

   • Aexcept ValueError, TypeError: ... except Exception: ...
   • Bexcept ValueError: ... except TypeError: ... except Exception: ...
   • Cexcept: ... except Exception: ... except ValueError: ...
   • Dexcept Exception: ... except ValueError: ... except TypeError: ...
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