List IndexError Exception Handling

IndexError is an exception that occurs when trying to access an index that is out of range in a list.

This exception is raised when you use an index that is larger than the length of the list or attempt to access an element from an empty list.

For example, trying to access a 4th element in a list with only 3 elements will raise an IndexError.

Copy
fruits = ["apple", "banana", "cherry"]

# IndexError occurs because there is no 4th element
fourth_fruit = fruits[3]

To prevent IndexError, you can either check the length of the list beforehand or use exception handling.

Copy
fruits = ["apple", "banana", "cherry"]

# Check the length of the list to prevent IndexError
if len(fruits) > 3:
    fourth_fruit = fruits[3]
else:
    print("The list contains only 3 elements.")

print()

# Using exception handling
try:
    fourth_fruit = fruits[3]
except IndexError:
    print("An exception has occurred.")