ex36.py

#coding: utf-8
"""
石头剪子布 机机对战
"""

from random import choice

def start():
    hands = ['rock', 'scissors', 'paper']
    print "Rock-Scissors-Paper game"
    print "%s kill %s, %s kill %s, %s kill %s." % (hands[0], hands[1], hands[1], hands[2], hands[2], hands[0])
    print "The computer can be smart or stupid."
    print "Let's watch they play.\n"
    play(100)


def play(count):
    hands = ['rock', 'scissors', 'paper']
    player = ['smart', 'stupid']

    print "%s vs %s, start" % (player[0], player[1])

    i = 1
    score = [0, 0]
    while score[0] + score[1] < count:
        if i == 1:
            h1 = choice(hands)
            h2 = choice(hands)
        else:
            h1_last = h1
            h1 = smart(h1_last)
            h2 = stupid(h1_last)

        r = compare(h1, h2)
        print "%d. %s : %s = %s" % (i, h1, h2, r),
        if r != 0:
            if r == 1:
                score[0] += 1
            else:
                score[1] += 1
            print "  %d : %d " % (score[0], score[1]),
        print ""
        i += 1
    if score[0] > score[1]:
        print "Winer is %s" % player[0]
    elif score[0] < score[1]:
        print "Winer is %s" % player[1]
    else:
        print "Draw game!"


def hand_win(hand):
    """return what can win hand."""
    if hand == 'rock':
        return 'paper'
    elif hand == 'scissors':
        return 'rock'
    else:
        return 'scissors'

def hand_lose(hand):
    """return what can lose hand."""
    if hand == 'rock':
        return 'scissors'
    elif hand == 'scissors':
        return 'paper'
    else:
        return 'rock'

def compare(h1, h2):
    """win lose draw: 1 -1 0"""
    if h1 == hand_win(h2):
        return 1
    elif h1 == h2:
        return 0
    else:
        return -1

def stupid(last_hand):
    """stupid just wanna win opponent's last hand."""
    list = [hand_win(last_hand), hand_win(last_hand), last_hand]
    return choice(list)

def smart(last_hand):
    """smart wanna win stupid."""
    list = [hand_lose(last_hand), hand_lose(last_hand), hand_win(last_hand), last_hand]
    return choice(list)

start()