Question 8 of 8intermediate🔧 ApplyShort Answer3 marks

What is the use of finally clause? Use finally clause in the problem given in Question No. 7.

Correct Answer

The finally clause is an optional part of the try statement in Python. The statements inside the finally block are always executed regardless of whether an exception has occurred in the try block or not. It is commonly used while working with files to ensure that the file object is closed properly. If used, finally should always be placed at the end of try clause, after all except blocks and the else block.

Example using finally clause: python try: numerator=50 denom=int(input("Enter the denominator: ")) quotient=(numerator/denom) print("Division performed successfully") except ZeroDivisionError: print("Denominator as ZERO is not allowed") except ValueError: print("Only INTEGERS should be entered") else: print("The result of division operation is ", quotient) finally: print("OVER AND OUT")

In this program, the message "OVER AND OUT" will be displayed irrespective of whether an exception is raised or not.

Exercise: EXERCISE | Q: 9 | (Page 18)
For More Understanding

Explanation

The textbook explains that the finally clause ensures certain code always executes, whether an exception occurs or not. This is particularly useful for cleanup operations like closing files. The example from Program 1-6 demonstrates how finally works with a division operation - even if ZeroDivisionError or ValueError occurs, or if no exception occurs, the finally block executes and displays 'OVER AND OUT'.

Solution Steps

  1. Step 1: Explain the purpose of finally clause - always executes regardless of exceptions

  2. Step 2: Mention common use case - closing file objects

  3. Step 3: Show code example with try-except-else-finally structure

  4. Step 4: Explain that finally block output appears in all scenarios

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