PCEP Section 4C: Python Built-In Exceptions Hierarchy

Which of the following is the top-most class in Python’s built-in exception hierarchy?

• Exception

• BaseException

• SystemExit

• RuntimeError

What is the direct parent class of the `IndexError` exception in Python?

• LookupError

• ValueError

• ArithmeticError

• Exception

Which exception is raised when the `del` statement is used on a dictionary key that does not exist?

• IndexError

• KeyError

• ValueError

• TypeError

Which of the following exceptions is NOT a subclass of `Exception`?

• SystemExit

• ValueError

• TypeError

• IndexError

Which exception is raised when an operation or function is applied to an object of inappropriate type?

• ValueError

• TypeError

• KeyError

• LookupError

Which of the following best describes an "abstract exception" in Python’s built-in exception hierarchy?

• An exception that cannot be instantiated directly and is meant to be subclassed.

• An exception that is only used for mathematical errors.

• An exception that is raised for keyboard interrupts.

• An exception that is used for system exit events.

Suppose you have the following code: ```python try: print(1 / 0) except Exception as e: print("Caught:", type(e).__name__) ``` What will be printed?

• Caught: ArithmeticError

• Caught: ZeroDivisionError

• Caught: ValueError

• Caught: TypeError

Which of the following exceptions is a direct subclass of `ArithmeticError`?

• ZeroDivisionError

• KeyError

• IndexError

• SystemExit

Given the following code: ```python try: d = {"a": 1} print(d["b"]) except LookupError: print("LookupError caught") ``` What will be the output?

• LookupError caught

• KeyError caught

• IndexError caught

• No output

Which of the following statements about `KeyboardInterrupt` is TRUE?

• It is raised when the user interrupts program execution, usually by pressing Ctrl+C.

• It is raised when a key is not found in a dictionary.

• It is a subclass of ArithmeticError.

• It is used to handle mathematical errors.