第一个爬虫和测试

一、调整模拟乒乓球竞赛程序

1、原代码：

import random 
from math import *
def printIntro():#打印程序的介绍性信息
    print("模拟乒乓球竞赛")
    print("学号31")
    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():#获得用户输入的参数
    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）: "))
    h= eval(input("请输入一场要打几局:"))
    n = eval(input("模拟比赛的场次: "))
    return a, b, h,n
 
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 gameOver(scoreA, scoreB):
     g=scoreA-scoreB
     if (abs(g)==2 and  scoreA> 10 and scoreB> 10) or (g> 0 and scoreA==11) or (g<0 and scoreB==11):
        return scoreA,scoreB
        
    
def simOneGame(probA, probB,h):#模拟一场比赛
    for i in range(h): #模拟七局四胜或五局三胜为一场
        serving = "A"
        roundA =roundB=0  #分别为队伍A和B的赢得的比赛的局次
        scoreA, scoreB = 0, 0
        while not gameOver(scoreA, scoreB): #模拟一局比赛
            roundA=roundB=0
            if serving == "A":
                if random.random() < probA:
                    scoreA += 1             
                else:
                    serving = "B"
            else:
                if random.random() < probB:
                    scoreB += 1
              
                else:
                    serving = "A"
        if scoreA>scoreB:
            roundA += 1
        else:
            roundB += 1
    return roundA,roundB
    
 
def simNGames(n ,probA, probB,h):#利用A，B的的能力值模拟N场比赛
    winsA, winsB = 0, 0
    for i in range(n):
        roundA , roundB = simOneGame(probA, probB,h)
        if roundA >roundB:
            winsA += 1
        else:
            winsB += 1
    return winsA, winsB
 
def main():
    printIntro()
    probA, probB, h,n = getInputs()#分别为队伍A和B的能力值，一场的局数，比赛的场次
    winsA, winsB = simNGames(n, probA, probB,h)#分别为队伍A和B的赢得的比赛的场次
    printSummary(winsA, winsB)
    if h==7:
        print('此次模拟单打淘汰赛')
    else:
        print('此次模拟双打淘汰赛或者是团体淘汰赛')
main()

 

2、修改后：

（1）代码：

import random 
from math import *
def printIntro():#打印程序的介绍性信息
    print("模拟乒乓球竞赛")
    print("学号31")
    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）")
try:
    printIntro()
except:
    print ('Error')   
def getInputs():#获得用户输入的参数
    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）: "))
    h= eval(input("请输入一场要打几局:"))
    n = eval(input("模拟比赛的场次: "))
    return a, b, h,n
try:
    probA, probB, h,n = getInputs()
except:
    print ('Error') 

def gameOver(scoreA, scoreB):
     g=scoreA-scoreB
     if (abs(g)==2 and  scoreA> 10 and scoreB> 10) or (g> 0 and scoreA==11) or (g<0 and scoreB==11):
        return scoreA,scoreB
try:
     gameOver(11,11)
except:
    print ('Error')        
    
def simOneGame(probA, probB,h):#模拟一场比赛
    for i in range(h): #模拟七局四胜或五局三胜为一场
        serving = "A"
        roundA =roundB=0  #分别为队伍A和B的赢得的比赛的局次
        scoreA, scoreB = 0, 0
        while not gameOver(scoreA, scoreB): #模拟一局比赛
            roundA=roundB=0
            if serving == "A":
                if random.random() < probA:
                    scoreA += 1             
                else:
                    serving = "B"
            else:
                if random.random() < probB:
                    scoreB += 1
              
                else:
                    serving = "A"
        if scoreA>scoreB:
            roundA += 1
        else:
            roundB += 1
    return roundA,roundB
try:
    simOneGame(0.2,0.3,7)
except:
    print ('Error')   
 
def simNGames(n ,probA, probB,h):#利用A，B的的能力值模拟N场比赛
    winsA, winsB = 0, 0
    for i in range(n):
        roundA , roundB = simOneGame(probA, probB,h)
        if roundA >roundB:
            winsA += 1
        else:
            winsB += 1
    return winsA, winsB
try:
    simNGames(5,0.2,0.3,7)
except:
    print ('Error')
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))
try:
    winsA, winsB = simNGames(n, probA, probB,h)#分别为队伍A和B的赢得的比赛的场次
    printSummary(winsA, winsB)

except:
    print ('Error') 

    
    
if h==7:
    print('此次模拟单打淘汰赛')
else:
    print('此次模拟双打淘汰赛或者是团体淘汰赛')

2、结果：

 

二、用 requests 库访问百度主页

1、代码如下：

from requests import *
try:
    for i in range(20):
        print("第",i+1,"次访问")
        r=get("http://www.baidu.com")
        r.raise_for_status()
        r.encoding='utf-8'
        print("网络状态码:",r.status_code)
        print(r.text)
        print("text属性长度:",len(r.text))
        print("content属性长度:",len(r.content))
except:
    print("Error")

2、结果为：