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PCAP – Certified Associate Python Programmer PCAP-31-03 · Domain 2: Exceptions

Why except Exception does not catch KeyboardInterrupt or SystemExit

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Last reviewed September 25, 2026 · Leer en español

It is tempting to wrap a whole program in try with except Exception: to stop it ever crashing. That works for ordinary errors, but two important events pass straight through such a handler, by design. Understanding why depends on the exception hierarchy covered earlier.

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