Python - Custom Exceptions
You want to catch all exceptions except
KeyboardInterrupt and SystemExit. Which is the best way to write the except block?You want to catch all exceptions except KeyboardInterrupt and SystemExit. Which is the best way to write the except block?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Recall exception hierarchy for KeyboardInterrupt and SystemExit
BothKeyboardInterruptandSystemExitinherit directly fromBaseException, notException.Step 2: Choose except block that excludes these exceptions
except Exception:catches all exceptions exceptKeyboardInterruptandSystemExit, which is the desired behavior.Final Answer:
except Exception: -> Option AQuick Check:
Exception excludes system-exiting exceptions [OK]
Quick Trick: Use except Exception to exclude system-exiting exceptions [OK]
Common Mistakes:
- Using except BaseException catches everything including system exit
- Catching KeyboardInterrupt and SystemExit explicitly when not needed
- Combining Exception with KeyboardInterrupt in except tuple
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