response=requests.get(url=url,headers=headers)

    #处理中文乱码问题

    response.encoding='utf-8'

    page_text=response.text

    #初始化etree对象

    tree=etree.HTML(page_text)

    #解析对象列表

    page_list=tree.xpath('//div[@class="sc_warp  mt20"]/div/div/div/a')

    #创建文件夹存储下载数据

    folder='./jianli/'

    if not os.path.exists(folder):

        os.mkdir(folder)

        #遍历对象列表

    for page in page_list:

        #解析文件名

        name=page.xpath('./img/@alt')[0]

        #解决中文乱码问题

        #name=name.encode('iso-8859-1').decode('gbk')

        #解析下载页的URL

        href=page.xpath('./@href')[0]

        #print(name,href)

        #处理URL

        if href[0] == "/":

            href = 'https:' + href

        #获取下载页源码

        page_text2=requests.get(url=href,headers=headers).text

        #构造etree对象

        tree2=etree.HTML(page_text2)

        #解析下载地址

        href2=tree2.xpath('//div[@class="down_wrap"]/div[2]/ul/li[1]/a/@href')[0]

        #处理URL

        if href2[0]=="/":

            href2='https:'+href2

        #print(name,href2)

        #添加后缀名

        name=name+'.rar'

        #创建文件路径

        path=folder+name

        #读取文件数据

        data=requests.get(url=href2,headers=headers).content

        #数据持久化

        with open(path,'wb') as fp:

            fp.write(data)

        print(name,'下载成功！！！')

#对不同的页码循环执行

for i in range(50,879):