爬信息到excel里

代码：

#-*- coding = utf-8 -*-

from bs4 import BeautifulSoup
import urllib.request,urllib.error
import re
import xlwt

# 主函数
def main():
    baseurl = 'https://movie.douban.com/top250?start='
    dataList = getData(baseurl)
    dbpath = "豆瓣电影250.xls"
    saveData(dbpath,dataList)

findLink = re.compile(r'')         #创建正则的字符串的模式，影片详情link规则
findImgSrc = re.compile(r'',re.S)       # 忽略换行,影片图片
findTitle = re.compile(r'(.*?)')     # 影片名
findRating = re.compile(r'(.*?)')   # 影片评分
findJudge = re.compile(r'(\d*)人评价')     # 影片评价人数
findInq = re.compile(r'(.*?)')     # 影片概况
findBd = re.compile(r'
(.*?)
',re.S)      #影片的导演信息

# 得到一个指定url的网页内容
def askUrl(url):
    head = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36"}
    request = urllib.request.Request(url,headers = head)
    html = ""
    try:
        response = urllib.request.urlopen(request)
        html = response.read().decode("utf-8")
        # print(html)
    except urllib.error.URLError as e:
        print("报错")
        if hasattr(e,"code"):
            print(e.code)
        if hasattr(e,'reason'):
            print(e.reason)
    return html



# 得到数据
def getData(baseurl):
    dataList = []
    for i in range(0,10):   #调用获取信息页面
        url = baseurl + str(i*25)
        html = askUrl(url)
        # print(html)
        # 解析
        soup = BeautifulSoup(html,"html.parser")
        for item in soup.find_all("div",class_="item"):      #获取指定的列表
            # print(item)
            data = []       #保存信息
            item = str(item)
            # 正则提取
            link = re.findall(findLink,item)[0]     #re来找,影片详情link
            data.append(link)
            imgSrc = re.findall(findImgSrc,item)[0]
            data.append(imgSrc)
            titles = re.findall(findTitle,item)      #可能只有一个中文名字，不用【0】
            if (len(titles) == 2):
                ctitle = titles[0]
                data.append(ctitle)         #添加中国名
                otitle = titles[1].replace('/','')      #替换’/‘
                data.append(otitle)         #添加外国名
            else:
                data.append(titles[0])       #添加中国名
                data.append(' ')     #外国名留空

            rating = re.findall(findRating,item)[0]
            data.append(rating)


            judgeNum = re.findall(findJudge,item)[0]
            data.append(judgeNum)

            inq = re.findall(findInq,item)  #可能没有
            if (len(inq) != 0):
                inq = inq[0].replace('。','')
                data.append(inq)
            else:
                data.append(' ')

            bd = re.findall(findBd,item)[0]
            bd = re.sub("(\s+)?",' ',bd)
            data.append(bd.strip())     #去掉前后的空格
            # print(link)
            dataList.append(data)

    return dataList





# 保存数据
def saveData(dbpath,datalist):
    book = xlwt.Workbook(encoding="utf-8",style_compression=0)  # 创建Workbook对象
    sheet = book.add_sheet('豆瓣电影250',cell_overwrite_ok=True)  # 创建单元格
    # sheet.write(0, 0, 'hello')  # 行，列，
    col = ("电影详情连接","图片连接","影片中文名","影片外文名","评分","评价人数","概况","相关信息")
    for i in range(0,8):
        sheet.write(0,i,col[i])
    for i in range(0,250):
        # print("第%d条"%i)
        data = datalist[i]
        for j in range(0,8):
            sheet.write(i+1,j,data[j])
    book.save(dbpath)


if __name__ == "__main__":
    main()