Python Python Basics (2015) Python Data Types Use .split() and .join()

I am stuck again on the second line of code

I am ompletely confused about this line

banana.py
available = "banana split;hot fudge;cherry;malted;black and white"
sundaes = available.split(';')
menu = "our available flavors are: {}."
sundaes + "display_menu".

can u post the question