第一个爬虫和测试

（1）模拟乒乓球赛函数测试结果：

单打：

from random import random
def printIntro():
    print("这个程序模拟两个选手A和B的某种比赛")
    print("程序运行需要A和B的能力值（0到1之间）")
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）："))
    return a,b
def simNGames(probA,probB):
    winsA,winsB=0,0
    for i in range(7):
        scoreA,scoreB=simOneGame(probA,probB)
        if scoreA>scoreB:
            winsA+=1
            if winsA==5:
                break
        else:
            winsB+=1
            if winsB==5:
                break
    return winsA,winsB
def gameOver(a,b):
    return a==11 or b==11
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{:.1%}".format(winsA,winsA/n))
    print("选手B获胜{}场比赛，占比{:.1%}".format(winsB,winsB/n))
try:
    printIntro()
    probA,probB = 0.5,0.5
    winsA,winsB = simNGames(probA,probB)
    printSummary(winsA,winsB)
    print("043林树锋的结果截图")
except:
    print('Error')

测试结果：

双打：

from random import random
def printIntro():
    print("这个程序模拟两个选手A和B的某种比赛")
    print("程序运行需要A和B的能力值（0到1之间）")
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）："))
    return a,b
def simNGames(probA,probB):
    winsA,winsB=0,0
    for i in range(5):
        scoreA,scoreB=simOneGame(probA,probB)
        if scoreA>scoreB:
            winsA+=1
            if winsA==3:
                break
        else:
            winsB+=1
            if winsB==3:
                break
    return winsA,winsB
def gameOver(a,b):
    return a==11 or b==11
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{:.1%}".format(winsA,winsA/n))
    print("选手B获胜{}场比赛，占比{:.1%}".format(winsB,winsB/n))
try:
    printIntro()
    probA,probB = 0.5,0.5
    winsA,winsB = simNGames(probA,probB)
    printSummary(winsA,winsB)
    print("043林树锋的结果截图")
except:
    print('Error')

测试结果：

。

（2）用 requests 库的 get（）函数访问搜狗20次，打印返回状态，text（）内容，计算 text（）属性和 content（）属性所返回的网页内容长度。

import requests
for i in range(0,20):
    r=requests.get("https://www.sogou.com/")
print(r.status_code)
print(r.text)
print(type(r.text))
print(len(r.content))

（3）完成简单html页面计算：

from bs4 import BeautifulSoup
import re
html="""
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body>
    <h1>我的第一个标题</h1>
    <p id="first">我的第一个段落</p >
</body>
        <table border="1">
    <tr>
        <td>row 1, cell 1</td>
        <td>row 1, cell 2</td>
    </tr>
    <tr>
        <td>row 2, cell 1</td>
        <td>row 2, cell 2</td>
    </tr>
</table>
</html>
"""
abc= BeautifulSoup(html)
print(str(abc.head.string)+'\n'+'43')#打印头标签内容加上学号
print(abc.body.string)#打印body标签的内容
print(abc.find_all(id="first"))
r=abc.text
zhongwen = re.findall(u'[\u1100-\uFFFDh]+?',r)
print(zhongwen)

（4）爬取中国大学排名网站内容并转换为csv文件：

import csv
import os
import requests
import pandas
from bs4 import BeautifulSoup
allUniv = []
def getHTMLText(url):
    try:
        r = requests.get(url, timeout=30)
        r.raise_for_status()
        r.encoding = 'utf-8'
        return r.text
    except:
        return ""
def fillUnivList(soup):
    data = soup.find_all('tr')
    for tr in data:
        ltd = tr.find_all('td')
        if len(ltd)==0:
            continue
        singleUniv = []
        for td in ltd:
            singleUniv.append(td.string)
        allUniv.append(singleUniv)
def writercsv(save_road,num,title): #转化为csv文件
    if os.path.isfile(save_road):
        with open(save_road,'a',newline='')as f:
            csv_write=csv.writer(f,dialect='excel')
            for i in range(num):
                u=allUniv[i]
                csv_write.writerow(u)
    else:
         with open(save_road,'w',newline='')as f:
            csv_write=csv.writer(f,dialect='excel')
            csv_write.writerow(title)
            for i in range(num):
                u=allUniv[i]
                csv_write.writerow(u)
 
title=["排名","学校名称","省市","总分","生源质量","培养结果","科研规模","科研质量","顶尖成果","顶尖人才","科技服务","产学研究合作","成果转化"]
save_road="C:\\Users\\Benny\\Desktop\\Python\\Python练习\sqlit_test02.csv"
def main():
    url = 'http://www.zuihaodaxue.cn/zuihaodaxuepaiming2016.html'
    html = getHTMLText(url)
    soup = BeautifulSoup(html, "html.parser")
    fillUnivList(soup)
    writercsv(save_road,100,title)
main()

posted on 2020-05-15 23:23 叫你一声你敢应吗阅读(119) 评论(0) 编辑收藏举报

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第一个爬虫和测试

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