使用py一键获取所有必应壁纸图片

import requests
import lxml.etree
from time import sleep
import os


class Biying(object):


    def __init__(self,req_url):
        self.headers = {"user-agent": "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36"}
        self.req_url = req_url


    #获取页面总数
    def getpage(self):
        #1 请求数据path
        response = requests.get(self.req_url, headers=self.headers)
        #2 整理成xml文档
        xml = lxml.etree.HTML(response.text)
        #3 抽取想要的element 以下是获取类名为page的div标签下的span标签体内容 获取到的内容为：1 / 99
        page = xml.xpath('//div[@class="page"]/span')#<div class="page"><a href="/">上一页</a><span>1 / 99</span><a href="/?p=2">下一页</a></div>
        #4 通过对字符串分割操作来获取必应壁纸网页页数
        str=page[0].text.split(' ')[2]
        return (int)(str)
 
    #遍历页面
    def Eachpages(self,page,pages,path):
        i=page
        while i<=pages:
            temp=self.req_url+"?p={i}".format(i=i)
            print("第{page}页开始下载，当前页url：{url}".format(page=i,url=temp))
            count=self.EveryImage(temp,path)
            print("第{page}页已下载完成".format(page=i))
            i=i+1
            if (count == 0):
                print("网络出现错误，第{page}页重新下载")
                i=i-1
            os.system('cls')
 
 
    def EveryImage(self,url,path):
        response = requests.get(url, headers=self.headers)
        xml = lxml.etree.HTML(response.text)
        imgname = xml.xpath('//div[@class="description"]/h3')
        imgurl = xml.xpath('//div[@class="card progressive"]/img')
        print("当前页面有{}张壁纸".format(len(imgurl)))
        count = 0
        for n, u in zip(imgname, imgurl):
            name = n.text.split(' ')[0]
            img_url = u.xpath('@src')[0]
            count += 1
            print("第{}张壁纸 描述：{}  壁纸url：{}".format(count,name,url))
            self.download(name,img_url,path)
        return count


    def exit_info(self,show_info):
        print(show_info)
        for i in range(5, 0, -1):
            print("{sec}秒后退出".format(sec=i))
            sleep(1)
 
    def download(self,name,url,path):
        response = requests.get(url, headers=self.headers)  # 反爬虫，模拟浏览器提交
        NAME=""
        for i in range(len(name)):
            if name[i] not in '/\*:"?<>|':
                NAME+=name[i]
        isExists = os.path.exists(path)
        # 判断结果
        if not isExists:
            # 如果不存在则创建目录   创建目录操作函数
            os.makedirs(path)
        filename = path +'\\'+ NAME + ".jpg"
        with open(filename, "wb") as f:
            f.write(response.content)
            f.close()
 
if __name__ == '__main__':
    url="https://bing.ioliu.cn/"      #壁纸网页url
    By_spider = Biying(url)
    pages = By_spider.getpage()    #获取页面总数，并且转换为int类型
    print("壁纸总页数：{pages}".format(pages=pages))    #打印必应壁纸页数
    path = input("输入图片存储路径：")
    page=(int)(input("从第几页开始下载（1-{}）：".format(pages)))
    if page<=0 or page>pages:
        By_spider.exit_info("输入页数不合规范，请重新输入")
    else:
        By_spider.Eachpages(page,pages,path)
        By_spider.exit_info("下载完成")