# Write a Python program that executes an operation on a list and handles an IndexError exception if the index is out
# of range.

# Defines 'test_list' var with 4 elements, indices 0-3.
test_list = ['a', 'b', 'c', 'd']
# Try printing the 4th index in the list
try:
    print(test_list[4])
# Handle the expected IndexError
except IndexError:
    # Print an error message
    print('That list entry does not exist.')