爬虫豆瓣

import requests
from lxml import etree
def spider_douban_top250():
    movie_list_info = []
    headers = {"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36"}
    for i in range(0, 250, 25):
        url = 'https://movie.douban.com/top250?start={}&filter='.format(i)

    # 获取bytes类型响应
    data = requests.get(url, headers=headers).content
    html = etree.HTML(data)



    ol_list = html.xpath('//div[@id="content"]//div[@class="article"]/ol/li')

    for movie in ol_list:

            # 影片序号
            serial_number = movie.xpath('./div[@class="item"]/div[@class="pic"]/em/text()')
            if len(serial_number) == 0:
                serial_number = ''
            else:
                serial_number = serial_number[0]
            # print(serial_number)

        # 电影的名字
        movie_name = movie.xpath('./div[@class="item"]/div[@class="info"]/div[@class="hd"]/a/span[1]/text()')[0]
        # print(movie_name)
        # 电影的介绍
        movie_introduce = movie.xpath('./div[@class="item"]/div[@class="info"]/div[@class="bd"]/p[1]/text()')[
            0].strip()
        # print(movie_introduce)
        # 电影的星级
        star = \
 ```       movie.xpath('./div[@class="item"]/div[@class="info"]/div[@class="bd"]/div[@class="star"]/span[2]/text()')[0]
        # print(star)
        # 电影的评价
        evalute = movie.xpath(
            './div[@class="item"]/div[@class="info"]/div[@class="bd"]/div[@class="star"]/span[4]/text()')
        evalute = evalute[0].replace('人评价', '')
        # print(evalute)
        # 电影的描述
        describe = movie.xpath('./div[@class="item"]/div[@class="info"]/div[@class="bd"]/p[@class="quote"]/span[1]/text()')
        # print(describe)
        # 电影封面的地址
        movie_img_url = movie.xpath('./div[@class="item"]/div[@class="pic"]/a/img/@src')[0]
        # print(movie_img_url)

            movie_list_info.append({
                'serial_number': serial_number,
                'movie_name': movie_name,
                'movie_introduce': movie_introduce,
                'star': star,
                'evalute': evalute,
                'describe': describe,
                'movie_img_url': movie_img_url
            })
    for movie in movie_list_info:
        print(movie)

爬图

    # 下载图片
for movie in movie_list_info:
    url = movie['movie_img_url']
    resp = requests.get(url)
    if resp.status_code == 200:
        img_name = '0000000{}.jpg'.format(movie['serial_number'])
        with open('./imgs/{}'.format(img_name), 'wb') as f:
            f.write(resp.content)

spider_douban_top250()