You want to catch all exceptions except KeyboardInterrupt and SystemExit. Which of the following except clauses is the best practice?

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Python - Custom Exceptions

You want to catch all exceptions except KeyboardInterrupt and SystemExit. Which of the following except clauses is the best practice?

Aexcept Exception:

Bexcept BaseException:

Cexcept (KeyboardInterrupt, SystemExit):

Dexcept:

Step-by-Step Solution

Solution:

Step 1: Understand Exception Classes
BaseException is the root of all exceptions including system-exiting ones like KeyboardInterrupt and SystemExit. Exception excludes these system-exiting exceptions.
Step 2: Analyze Options
except Exception: catches all exceptions derived from Exception, excluding system-exiting exceptions. except BaseException: catches everything including system-exiting exceptions, which is not recommended. except (KeyboardInterrupt, SystemExit): catches only the system-exiting exceptions, not others. except: is equivalent to catching BaseException.
Final Answer:
Option A -> Option A
Quick Check:
Use except Exception to exclude system-exiting exceptions [OK]

Quick Trick: Use except Exception to exclude system-exiting exceptions [OK]

Common Mistakes:

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