抓取猫眼电影排行

提取猫眼电影TOP100的电影名称、时间、评分、图片等信息，提取的站点URL为，提取的结果会以文件形式保存下来。
 1 from multiprocessing import Pool
 2 import json
 3 import requests
 4 from requests.exceptions import RequestException
 5 import re
 6 
 7 def get_one_page(url):
 8     headers = {
 9         'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.162 Safari/537.36'
10     }
11     try:
12         response = requests.get(url, headers=headers)
13         if response.status_code == 200:
14             return response.text
15         return None
16     except RequestException:
17         return None
18 
19 def parse_one_page(html):
20     pattern = re.compile('<dd>.*?board-index.*?>(d+)</i>.*?data-src="(.*?)".*?name"><a'
21                          + '.*?>(.*?)</a>.*?star">(.*?)</p>.*?releasetime">(.*?)</p>'
22                          + '.*?integer">(.*?)</i>.*?fraction">(.*?)</i>.*?</dd>', re.S)
23     items = re.findall(pattern,html)
24     for item in items:
25         yield {
26             'index':item[0],
27             'image':item[1],
28             'title':item[2],
29             'actor':item[3].strip()[3:],
30             'time': item[4].strip()[5:],
31             'score': item[5] + item[6]
32         }
33 
34 def write_to_file(content):
35     with open('result.txt','a',encoding='utf-8') as f:
36         f.write(json.dumps(content,ensure_ascii=False)+'
')
37         f.close()
38 
39 def main (offset):
40     url = 'http://maoyan.com/board/4?offset='+str(offset)
41     html = get_one_page(url)
42     for item in parse_one_page(html):
43         print(item)
44         write_to_file(item)
45 
46 if __name__ == '__main__':
47     #for i in range(10):
48         #main(offset = i * 10)
49     pool = Pool()
50     pool.map(main,[i*10 for i in range(10)])