Hackerrank File I/O and Exception Handling 2

Question 1

Which Python keyword starts a block that catches exceptions?

Accepted Answer

except

Answer

Python uses `except` (paired with `try`) to catch and handle exceptions, unlike Java/C++ which use `catch`.

Question 2

Which clause in a try/except construct always executes regardless of whether an exception occurred?

Accepted Answer

finally

Answer

The `finally` clause executes unconditionally after the try and any except blocks, making it ideal for cleanup code.

Question 3

How do you re-raise the currently-handled exception inside an except block without losing the traceback?

Accepted Answer

raise

Answer

A bare `raise` statement inside an except block re-raises the current exception preserving the original traceback.

Question 4

What is the base class for all built-in, non-system-exiting exceptions in Python?

Accepted Answer

Exception

Answer

`Exception` is the base class for all built-in exceptions that programs are expected to catch; `BaseException` also includes SystemExit and KeyboardInterrupt.

Question 5

Which except clause syntax lets you capture the exception instance as a variable named 'e'?

Accepted Answer

except Exception as e:

Answer

The `except ExceptionType as variable:` syntax binds the caught exception instance to the given variable name.

(Hackerrank) HackerRank Python Certification Practice Test

(Hackerrank) HackerRank Python Certification Practice Test

Hackerrank File I/O and Exception Handling 2