Requests+BeautifulSoup+正则表达式爬取猫眼电影Top100（名称，演员，评分，封面，上映时间，简介）

 # encoding:utf-8
 from requests.exceptions import RequestException
 import requests
 import re
 import json
 from multiprocessing import Pool

 def get_one_page(url):
     try:
         response = requests.get(url)
         if response.status_code == 200:
             return response.text
         return None
     except RequestException:
         return None

 def parse_one_page(html):
     pattern = re.compile('<dd>.*?board-index.*?>(\d+)</i>.*?data-src="(.*?)".*?name"><a'
                          +'.*?>(.*?)</a>.*?star">(.*?)</p>.*?releasetime">(.*?)</p>'
                           +'.*?integer">(.*?)</i>.*?fraction">(.*?)</i>.*?</dd>',re.S)
     items = re.findall(pattern, html)
     # print(items)
     for item in items:
         yield {
             'index': item[0],
             'image': item[1],
             'title': item[2],
             'actor': item[3].strip()[3:],
             'time': item[4].strip()[5:],
             'score': item[5]+item[6]
         }

 def write_to_file(content):
     with open('MaoyanTop100.txt', 'a', encoding='utf-8') as f:
         f.write(json.dumps(content, ensure_ascii=False)+'\n')
         f.close()

 def main(offset):
     url = "http://maoyan.com/board/4?offset="+str(offset)
     html = get_one_page(url)
     # print(html)
     # parse_one_page(html)
     for item in parse_one_page(html):
         print(item)
         write_to_file(item)

 if __name__ == '__main__':
     pool = Pool()
     # for i in range(10):
     #     main(i*10)
     # 加快效率
     pool.map(main, [i*10 for i in range(10)])

效果图：

更新（获取封面以及影片简介）：

 # encoding:utf-8
 from requests.exceptions import RequestException
 import requests
 import json
 import re
 from urllib import request
 from bs4 import BeautifulSoup

 def get_one_page(url):
     try:
         response = requests.get(url)
         if response.status_code == 200:
             return response.text
         return None
     except RequestException:
         return None

 def parse_one_page(html):
     pattern = re.compile('<dd>.*?board-index.*?>(\d+)</i>.*?href="(.*?)".*?data-src="(.*?)".*?name"><a'
                          +'.*?>(.*?)</a>.*?star">(.*?)</p>.*?releasetime">(.*?)</p>'
                           +'.*?integer">(.*?)</i>.*?fraction">(.*?)</i>.*?</dd>',re.S)
     items = re.findall(pattern, html)
     # print(items)
     for item in items:
         yield {
             'index': item[0],
             'jump': item[1],
             'image': item[2],
             'title': item[3],
             'actor': item[4].strip()[3:],
             'time': item[5].strip()[5:],
             'score': item[6]+item[7]
         }

 def parse_summary_page(url):
     # url = 'https://maoyan.com/films/1203'
     head = {}
     # 使用代理
     head['User - Agent'] = 'User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.26 Safari/537.36 Core/1.63.6788.400 QQBrowser/10.3.2843.400'
     req = request.Request(url, headers=head)
     response = request.urlopen(req)
     html = response.read()
     # 创建request对象
     soup = BeautifulSoup(html, 'lxml')
     # 找出div中的内容
     soup_text = soup.find('span', class_='dra')
     # 输出其中的文本
     # print(soup_text.text)
     return soup_text

 def write_to_file(content):
     with open('newMaoyanTop100.txt', 'a', encoding='utf-8') as f:
         f.write(json.dumps(content, ensure_ascii=False)+'\n')
         f.close()

 def main(offset):
     url = "http://maoyan.com/board/4?offset="+str(offset*10)
     html = get_one_page(url)

     for item in parse_one_page(html):
         # print(item['number'])
         # print(item['jump'])
         jump_url = "https://maoyan.com"+str(item['jump'])
         item['summary'] = str(parse_summary_page(jump_url)).replace("<span class=\"dra\">","").replace("</span>","")
         print(item)
         write_to_file(item)

     # 写txt
     # for item in parse_one_page(html):
     #     write_to_file(item['title'])

     # 爬取100张图片
     # path = 'E:\\myCode\\py_test\\MaoyanTop100\\images\\'
     # for item in parse_one_page(html):
     #     urllib.request.urlretrieve(item['image'], '{}{}.jpg'.format(path, item['index']))

 if __name__ == '__main__':
     for i in range(10):
         main(i)