Project 6: RPS

Another project that I worked on for the past few hours has been completed. Maybe I'll do the R-P-S-Lizard-Spock (or even the 101-object version!) I thought that using an dictionary as a data structure was appropriate (and slightly creative). Pretty good, if I may say so myself.

rpsdata = {"r":["s"], "p":["r"], "s":["p"]}
def rps(s1, s2):
    if s1 in rpsdata:
        if s2 not in rpsdata:
            print(s2 + " is not valid.")
            new = raw_input("Enter a valid input: ")
            rps(s1, new)
        if s2 in rpsdata[s1]:
            print(s1 + " wins!")
            return 1
        elif s1 in rpsdata[s2]:
            print(s2 + " wins!")
            return 0
        elif s1 == s2:
            print("Tie.")
            return -1
    else:
        print(s1 + " is not valid.")
        new = raw_input("Enter a valid input: ")
        rps(new, s2)
roundnum = 0
p1wins = 0
p2wins = 0
while True:
    s1 = raw_input("P1, enter a r, p, or s: ")
    s2 = raw_input("P2, enter a r, p, or s: ")
    num = rps(s1, s2)
    if num == 0:
        p2wins += 1
    elif num == 1:
        p1wins += 1
    exit = raw_input("Exit?  ")
    roundnum += 1
    if len(exit) == 0:
        continue
    elif exit[0].lower() == "e":
        print("Thanks for playing.")
        print("P1 won %.2f percent of the time." % float(100 * p1wins / roundnum))
        print("P2 won %.2f percent of the time." % float(100 * p2wins / roundnum))
        break