Python 3 for Beginners: Handling Exceptions in Python Lists - Using the Index Method

The video tutorial explains how to use the index function in Python to find the first occurrence of a value in a list. It highlights the importance of handling exceptions to prevent program crashes and demonstrates using try-except blocks to manage errors effectively. The tutorial provides examples of unhandled exceptions and how to update code to handle them gracefully.

What does the index method return when a value is found in a list?

• The index of the last occurrence of the value

• The index of the first occurrence of the value

• The total number of occurrences of the value

• An error message

What happens if the index method does not find the specified value in the list?

• It raises an exception

• It returns -1

• It returns the length of the list

• It returns None

What is an exception in Python?

• An indication that something went wrong or unexpected occurred

• A warning message

• An indication of a successful operation

• A syntax error in the code

What is the purpose of a try-except block in Python?

• To speed up the execution of the program

• To automatically fix errors in the code

• To execute code only if no errors are present

• To handle exceptions and prevent program termination

In the try-except block, what happens if an exception is raised in the try block?

• The program continues without any changes

• The exception is ignored

• The code in the except block is executed

• The program terminates immediately