user1 = input("What's your name?")
user2 = input("And your name?")
user1_answer = input("%s, do yo want to choose rock, paper or scissors?" % user1)
user2_answer = input("%s, do you want to choose rock, paper or scissors?" % user2)

def compare(u1, u2):
    if u1 == u2:
        return("It's a tie!")