Revision Quiz 1

Which block executes whether or not an exception occurs in Python?

• try
• except
• finally
• else
• raise

Answer explanation

The finally block always executes.

What exception is raised when converting 'abc' to int using int('abc')?

• TypeError
• ValueError
• NameError
• IndexError
• RuntimeError

Answer explanation

Invalid literal for int() raises ValueError.

Select the correct order of blocks in Python exception handling:

• try → except → finally
• try → finally → except
• except → try → finally
• try → else → finally (without except)
• else → try → except

Answer explanation

Basic pattern is try/except/finally; else is optional between except and finally.

Which statement will manually trigger an exception?

• throw Exception()
• raise Exception()
• rise Exception()
• error()
• assert False()

Answer explanation

Python uses raise to throw exceptions.

What does the else block in try/except/else indicate?

• Runs only if an exception occurs
• Runs only if no exception occurs
• Always runs
• Runs only after finally
• Is required with finally

Answer explanation

else runs when no exception is raised in try.

What exception is most appropriate for division by zero?

• ArithmeticError
• ZeroDivisionError
• OverflowError
• ValueError
• TypeError

Answer explanation

ZeroDivisionError is a subclass of ArithmeticError.

Which exception is raised by list index out of range?

• KeyError
• IndexError
• LookupError
• ValueError
• RangeError

Answer explanation

IndexError occurs for invalid indices; it's a LookupError subclass.

What is printed? try: print(1/1) except ZeroDivisionError: print('Z') finally: print('F')

• 1 then F
• Z then F
• F only
• No output
• Error

Answer explanation

No exception; prints 1 then finally 'F'.

Which mode opens a text file for reading (default encoding)?

• r
• rb
• rt
• rw
• r+

Answer explanation

'r' opens for text reading.

Which function reads the entire contents of a file into one string?

• readline()
• readlines()
• read()
• iter()
• scan()

Answer explanation

read() returns the whole file as a single string.