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Error Handling and Debugging Flashcards

7 cards from real PCEP practice questions. Tap to flip, then mark Knew It or Still Learning โ€” missed cards come back until you master them.

Read the first 7 Error Handling and Debugging flashcards as text
  1. What is the base class for all built-in exceptions in Python?

    Answer: BaseException

    `BaseException` is the base class for all built-in exceptions, while `Exception` is a subclass of `BaseException` used for most non-system-exiting exceptions.

  2. What does `raise` without any arguments do inside an `except` block?

    Answer: Re-raises the currently handled exception

    A bare `raise` statement inside an `except` block re-raises the exception currently being handled.

  3. Which of the following correctly catches multiple exception types in a single except clause?

    Answer: except (ValueError, TypeError):

    Multiple exception types are caught by placing them in a tuple: `except (ValueError, TypeError):`.

  4. What exception is raised when a variable is referenced before it has been assigned a value?

    Answer: NameError

    `NameError` is raised when a local or global name cannot be found, which includes using a variable before assigning it.

  5. What is the result of this code? def f(): try: return 1 finally: return 2 print(f())

    Answer: 2

    When both `try` and `finally` contain `return`, the `finally` block's `return` overrides the `try` block's `return`.

  6. Which exception is raised when a `list.index()` call cannot find the specified value?

    Answer: ValueError

    `list.index()` raises `ValueError` when the specified value is not present in the list.

  7. What is the purpose of the `assert` statement in Python?

    Answer: To test a condition and raise AssertionError if it is False

    `assert condition, message` raises `AssertionError` with the optional message if the condition evaluates to False.