python爬取豆瓣top250电影源码

数据库版
#-*- codeing=utf-8 -*-
import sys
from bs4 import BeautifulSoup
import re
import urllib.request,urllib.error
import xlwt
import sqlite3
#影片超链接的规则
findlink=re.compile(r'<a href="(.*?)">')#创建正则表达式对象，表示规则
#影片图片
findImgsrc=re.compile(r'<img.*src="(.*?)"',re.S)#re.S让换行符包含在字符中
#影片片名
findtitle=re.compile(r'<span class="title">(.*?)</span>')
#影片评分
findRating=re.compile(r'<span class="rating_num" property="v:average">(.*?)</span>')
#评价人数
findjudge=re.compile(r'<span>(d*)人评价</span>')
# 找到概况
findinq=re.compile(r'<span class="inq">(.*)</span>')
#找到影片相关内容导演
findBd=re.compile(r'<p class="">(.*?)</p>',re.S)


def main():
    baseurl="https://movie.douban.com/top250?start="
    #爬取网页
    datalist=getDate(baseurl)
    dbpath="movie.db"
    saveData2DB(datalist,dbpath)


#得到指定一个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/93.0.4577.82 Safari/537.36"}
    request=urllib.request.Request(url,headers=head)
    html=""
    try:
        reponse=urllib.request.urlopen(request)
        html=reponse.read().decode("utf-8")
        # print(html)
    except Exception as e:
        print(e)
    return html

#爬取网页
def getDate(baseurl):
    datalist=[]
    for i in range(0,10):
        url=baseurl+str(i*25)
        html=askurl(url)
        soup=BeautifulSoup(html,"html.parser")
        for item in soup.find_all('div',class_="item"):
            data=[]
            item=str(item)
            #获取到影片的超链接
            link=re.findall(findlink,item)[0]
            data.append(link)

            imgsrc=re.findall(findImgsrc,item)[0]
            data.append(imgsrc)

            title = re.findall(findtitle, item)
            if (len(title)==2):
                ctitle=title[0]#添加中文名
                data.append(ctitle)
                otitle=title[1].replace("/","")#去掉无关的符号
                data.append(otitle)#添加外国名
            else:
                data.append(title[0])
                data.append(' ')#外国名留空

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

            judge= re.findall(findjudge, item)[0]
            # print(judge)
            data.append(judge)

            inq = re.findall(findinq, item)
            if len(inq)!=0:
                inq=inq[0].replace("。","")
                data.append(inq)
            else:
                data.append(inq)

            Bd = re.findall(findBd, item)[0]
            Bd=re.sub('<br(s+)?/(s+)'," ",Bd)
            Bd=re.sub('/'," ",Bd)
            data.append(Bd.strip())

            datalist.append(data)
    return datalist



#保存数据
def saveData(datalist,savepath):
    book=xlwt.Workbook(encoding="utf-8")
    sheet=book.add_sheet('豆瓣电影top250',cell_overwrite_ok=True)
    col=('电影详情连接',"图片连接","影片中文名","影片外国名","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+1))
        data=datalist[i]
        for j in range(0,8):
            sheet.write(i+1,j,data[j])

    book.save('豆瓣电影Top250.xls')


def saveData2DB(datalist,dbpath):
    init_db(dbpath)
    conn=sqlite3.connect(dbpath)
    cur=conn.cursor()
    try:
        for data in datalist:
            for index in range(len(data)):
                if index==4 or index==5:
                    continue
                data[index] = '"' + str(data[index]) + '"'
            sql='''
                    insert into movie250(
                    info_link,pic_link,cname,ename,score,rated,instrduction,info)
                    values(%s)
                    '''%",".join(data)
            print(sql)
            cur.execute(sql)
            conn.commit()
        cur.close()
        conn.close()
        print("写入数据库成功")
    except Exception as e:
        print(e)


def init_db(dbpath):
    conn = sqlite3.connect(dbpath)
    cursor=conn.cursor()
    sql = '''
        create table movie250
        (
        id integer primary key autoincrement,
        info_link text,
        pic_link text,
        cname varchar,
        ename varchar,
        score numeric,
        rated numeric,
        instrduction text,
        info text

    )
    '''  # 创建数据表
    cursor.execute(sql)
    conn.commit()
    conn.close()

if __name__=="__main__":
    baseurl="https://movie.douban.com/top250?start="
    datalist=getDate(baseurl)
    dbpath="movie.db"
    saveData2DB(datalist,dbpath)
    print("爬取成功")

excel版
#-*- codeing=utf-8 -*-
import sys
from bs4 import BeautifulSoup
import re
import urllib.request,urllib.error
import xlwt
import sqlite3
#影片超链接的规则
findlink=re.compile(r'<a href="(.*?)">')#创建正则表达式对象，表示规则
#影片图片
findImgsrc=re.compile(r'<img.*src="(.*?)"',re.S)#re.S让换行符包含在字符中
#影片片名
findtitle=re.compile(r'<span class="title">(.*?)</span>')
#影片评分
findRating=re.compile(r'<span class="rating_num" property="v:average">(.*?)</span>')
#评价人数
findjudge=re.compile(r'<span>(d*)人评价</span>')
# 找到概况
findinq=re.compile(r'<span class="inq">(.*)</span>')
#找到影片相关内容导演
findBd=re.compile(r'<p class="">(.*?)</p>',re.S)


def main():
    baseurl="https://movie.douban.com/top250?start="
    #爬取网页
    datalist=getDate(baseurl)
    savepath=".\豆瓣电影Top250表格版.xls"
    saveData(datalist,savepath)


#得到指定一个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/93.0.4577.82 Safari/537.36"}
    request=urllib.request.Request(url,headers=head)
    html=""
    try:
        reponse=urllib.request.urlopen(request)
        html=reponse.read().decode("utf-8")
        # print(html)
    except Exception as e:
        print(e)
    return html

#爬取网页
def getDate(baseurl):
    datalist=[]
    for i in range(0,10):
        url=baseurl+str(i*25)
        html=askurl(url)
        soup=BeautifulSoup(html,"html.parser")
        for item in soup.find_all('div',class_="item"):
            data=[]
            item=str(item)
            #获取到影片的超链接
            link=re.findall(findlink,item)[0]
            data.append(link)

            imgsrc=re.findall(findImgsrc,item)[0]
            data.append(imgsrc)

            title = re.findall(findtitle, item)
            if (len(title)==2):
                ctitle=title[0]#添加中文名
                data.append(ctitle)
                otitle=title[1].replace("/","")#去掉无关的符号
                data.append(otitle)#添加外国名
            else:
                data.append(title[0])
                data.append(' ')#外国名留空

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

            judge= re.findall(findjudge, item)[0]
            # print(judge)
            data.append(judge)

            inq = re.findall(findinq, item)
            if len(inq)!=0:
                inq=inq[0].replace("。","")
                data.append(inq)
            else:
                data.append(inq)

            Bd = re.findall(findBd, item)[0]
            Bd=re.sub('<br(s+)?/(s+)'," ",Bd)
            Bd=re.sub('/'," ",Bd)
            data.append(Bd.strip())

            datalist.append(data)
    return datalist

#保存数据
def saveData(datalist,savepath):
    book=xlwt.Workbook(encoding="utf-8")
    sheet=book.add_sheet('豆瓣电影top250',cell_overwrite_ok=True)
    col=('电影详情连接',"图片连接","影片中文名","影片外国名","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+1))
        data=datalist[i]
        for j in range(0,8):
            sheet.write(i+1,j,data[j])
    book.save('豆瓣电影Top250表格版.xls')


def saveData2DB(datalist,dbpath):
    init_db(dbpath)
    conn=sqlite3.connect(dbpath)
    cur=conn.cursor()
    try:
        for data in datalist:
            for index in range(len(data)):
                if index==4 or index==5:
                    continue
                data[index] = '"' + str(data[index]) + '"'
            sql='''
                    insert into movie250(
                    info_link,pic_link,cname,ename,score,rated,instrduction,info)
                    values(%s)
                    '''%",".join(data)
            print(sql)
            cur.execute(sql)
            conn.commit()
        cur.close()
        conn.close()
        print("写入数据库成功")
    except Exception as e:
        print(e)




def init_db(dbpath):
    conn = sqlite3.connect(dbpath)
    cursor=conn.cursor()
    sql = '''
        create table movie250
        (
        id integer primary key autoincrement,
        info_link text,
        pic_link text,
        cname varchar,
        ename varchar,
        score numeric,
        rated numeric,
        instrduction text,
        info text

    )
    '''  # 创建数据表
    cursor.execute(sql)
    conn.commit()
    conn.close()

if __name__=="__main__":
    main()
    print("爬取成功")