infobot_v2

Use rpsrunner.py to play unranked matches on your computer.

Source code:

if input == "":
    import random
    outs = ["R", "P", "S"]
    
    c_hist = []
    p_hist = []
    
    w_count = 0
    t_count = 0
    l_count = 0
    
    rps_map = {("R", "R"): {"R": 0, "P": 0, "S": 0},
               ("R", "P"): {"R": 0, "P": 0, "S": 0},
               ("R", "S"): {"R": 0, "P": 0, "S": 0},
               ("P", "R"): {"R": 0, "P": 0, "S": 0},
               ("P", "P"): {"R": 0, "P": 0, "S": 0},
               ("P", "S"): {"R": 0, "P": 0, "S": 0},
               ("S", "R"): {"R": 0, "P": 0, "S": 0},
               ("S", "P"): {"R": 0, "P": 0, "S": 0},
               ("S", "S"): {"R": 0, "P": 0, "S": 0}
    }
    
    def best(last_pair):
        if (l_count - w_count) >= 10:
            return outs[random.randint(0,2)]
            
        if rps_map[last_pair]["R"] > rps_map[last_pair]["P"] and rps_map[last_pair]["R"] > rps_map[last_pair]["S"]:
            return "P" # paper beats rock
        elif rps_map[last_pair]["P"] > rps_map[last_pair]["R"] and rps_map[last_pair]["P"] > rps_map[last_pair]["S"]:
            return "S" # scissors beats paper
        elif rps_map[last_pair]["S"] > rps_map[last_pair]["R"] and rps_map[last_pair]["S"] > rps_map[last_pair]["P"]:
            return "R" # rock beats scissors
        else:
            return outs[random.randint(0,2)] # Not enough data, make a random guess
    # end def best
    
    def beats(c, p):
        global w_count, t_count, l_count
        
        if c == p:
            t_count += 1
        elif c == "R" and p == "R":
            t_count += 1
        elif c == "R" and p == "P":
            l_count += 1
        elif c == "R" and p == "S":
            w_count += 1
        elif c == "P" and p == "R":
            w_count += 1
        elif c == "P" and p == "P":
            t_count += 1
        elif c == "P" and p == "S":
            l_count += 1
        elif c == "S" and p == "R":
            l_count += 1
        elif c == "S" and p == "P":
            w_count += 1
        elif c == "S" and p == "S":
            t_count += 1
    # end def beats
    
    last_c = None
    last_p = None
    output = outs[random.randint(0,2)]
else:
    c_hist.append(output)
    p_hist.append(input)
    
    beats(output, input)
    
    if last_c is not None:
        rps_map[(last_c, last_p)][input] += 1
        output = best((output, input))
    else:
        output = outs[random.randint(0,2)]
    
    last_c = output
    last_p = input