预测一场乒乓球比赛的结果

 1 #羽毛球比赛预测
 2 from random import random
 3 def printTips():
 4     print("本人学号：2019310143143")
 5     print("这个程序模拟两轮乒乓球单打比赛，第二轮为晋级赛")
 6     print("每轮比赛均采取七局四胜制")
 7     print("程序运行需要每位参赛选手的能力值（以0到1之间的小数表示）")
 8 def getInputs():
 9     a = eval(input("请输入选手A的能力值(0-1): "))
10     b = eval(input("请输入选手B的能力值(0-1): "))
11     c = eval(input("请输入选手C的能力值(0-1): "))
12     d = eval(input("请输入选手D的能力值(0-1): "))
13     return a,b,c,d
14 def ModelNGames(powerA, powerB): #一场比赛七局四胜
15     winsA, winsB = 0, 0
16     for i in range(7):
17         scoreA, scoreB = ModelOneGame(powerA, powerB)
18         if scoreA > scoreB:
19             winsA += 1
20         else:
21             winsB += 1
22     return winsA, winsB
23 def gameOver(a,b):     #一局比赛胜利的判断
24     if a>10 or b>10:
25         if abs(a-b)>1:
26             return True
27         else:
28             return False
29 def judge(winsA,winsB):  #一场比赛胜利的判断
30     if winsA>=4 or winsB>=4:
31         return True
32     else:
33         return False
34 def ModelOneGame(powerA, powerB):#一局比赛
35     scoreA, scoreB = 0, 0
36     serving = "A"
37     while not gameOver(scoreA, scoreB):
38         if serving == "A":
39             if random() < powerA:
40                 scoreA += 1
41             else:
42                 serving="B"
43         else:
44             if random() < powerB:
45                 scoreB += 1
46             else:
47                 serving="A"
48     return scoreA, scoreB
49 def printResult1(winsA, winsB):#第一轮第一场的结果
50     if winsA > winsB:
51         print("A和B比分是{}:{}，选手A获胜，晋级成功".format(winsA, winsB))
52     else:
53         print("A和B比分是{}:{}，选手B获胜，晋级成功".format(winsA, winsB))
54 def printResult2(winsA, winsB):#第一轮第二场的结果
55     if winsA > winsB:
56         print("C和D比分是{}:{}，选手C获胜，晋级成功".format(winsA, winsB))
57     else:
58         print("C和D比分是{}:{}，选手D获胜，晋级成功".format(winsA, winsB))
59 def printResult3(winsE,winsF,winner):#输出二轮结果
60     if winsE > winsF:
61         print("比分是{}:{},选手{}获得冠军".format(winsE,winsF,winner))
62     else:
63         print("比分是{}:{},选手{}获得冠军".format(winsE,winsF,winner))
64 def main():
65     printTips()
66     powerA, powerB,powerC,powerD= getInputs()
67     winsA, winsB = ModelNGames(powerA, powerB)
68     printResult1(winsA, winsB)
69     winsC,winsD=ModelNGames(powerC,powerD)
70     printResult2(winsC,winsD)
71     E=max(winsA,winsB)
72     F=max(winsC,winsD)
73     powerE,powerF=0,0
74     if  E==winsA and F==winsC:#找到晋级的两个人的能力值
75         powerE=powerA
76         powerF=powerC
77     elif E==winsB and F==winsC:
78         powerE=powerB
79         powerF=powerC
80     elif E==winsA and F==winsD:
81         powerE=powerA
82         powerF=powerD
83     elif E==winsB and F==winsD:
84         powerE=powerB
85         powerF=powerD
86     winsE,winsF=ModelNGames(powerE,powerF)
87     if winsE>winsF:  #找到冠军
88         if powerE==powerA:
89             winner='A'
90         else :
91             winner='B'
92     else :
93         if powerF==powerC:
94             winner='C'
95         else :
96             winner='D' 
97     printResult3(winsE,winsF,winner)
98 main()

注：这段代码只适合两场（A和B，C和D）双人单打的晋级赛，可以判断冠军。