乒乓球

from random import random

def printIntro():

print("这个程序模拟两个选手A和B的乒乓球比赛")
print("程序运行需要A和B的能力值（以0到1之间的小数表示）")

def getInputs():

a = eval(input("请输入选手A的能力值（0-1）："))
b = eval(input("请输入选手B的能力值（0-1）："))
n = eval(input("模拟比赛的场次："))
return a, b, n

def simNGames(n, probA, probB):

winsA, winsB = 0, 0  
for i in range(n):
    scoreA, scoreB = simOneGame(probA, probB)
    if scoreA > scoreB:
        winsA += 1
    else:
        winsB += 1
return winsA, winsB

def gameOver(a, b):

return (a == 11 and b < 10) or (b == 11 and a < 10) or ((a >= 10 and b >= 10) and (abs(a - b) == 2))

def simOneGame(probA, probB):

scoreA, scoreB = 0, 0
serving = 'A'
while not gameOver(scoreA, scoreB):
    if serving == "A":
        if random() < probA:
            scoreA += 1
        else:
            serving = "B"
    else:
        if random() < probB:
            scoreB += 1
        else:
            serving = "A"
return scoreA, scoreB

def printSummary(winsA, winsB):

n = winsA + winsB
print("竞技分析开始，共模拟{}场比赛".format(n))
print("选手A获胜{}场比赛，占比{:0.1%}".format(winsA, winsA / n))
print("选手B获胜{}场比赛，占比{:0.1%}".format(winsB, winsB / n))

def main():
printIntro()
probA, probB, n = getInputs()
winsA, winsB = simNGames(n, probA, probB)
printSummary(winsA, winsB)

main()