Is there a better way to do this? Assuming very long lists, is this slow and wasteful?

flavors = ['chocolate', 'vanilla', 'caramel', 'strawberry', 'coffee']

for flavor in flavors:
    print(flavor, end = ', ' if (flavors.index(flavor) != len(flavors) -1) else '.')

Output:

chocolate, vanilla, caramel, strawberry, coffee.