test.py

replay = "y"
while replay.casefold() == "y":
    print("hello world")
    print("hello world")
    print("hello world")
    replay = input("play again? Y/N ")


# Mainly for this I was just playing around with while loops in a basic
# program to better understand how it all worked, before adding
# to my program

# Understanding where to put the .casefold was an initial wonder