利用正则+requests爬取猫眼电影信息

 import json

 # from multiprocessing import Pool

 import requests

 from requests.exceptions import RequestException

 import re

 def get_one_page(url):

     try:

         headers={"user-agent":'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36'}

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

         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)

     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('result.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)

     # url='http://www.baidu.com'

     html = get_one_page(url)

     # print(html)

     for item in parse_one_page(html):

         print(item)

         write_to_file(item)

 if __name__ == '__main__':

      for i in range(10):

           main(i*10)

注：需要重置requests的headers,否则猫眼电影拒绝访问。