猫眼电影实战（静觅视频教学）

 1 import requests
 2 from requests.exceptions import RequestException
 3 import re
 4 import json
 5 from multiprocessing import Pool
 6 
 7 def get_one_page(url):
 8     try:
 9         headers={‘user-agent‘:‘Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Win64; x64; Trident/4.0) 32-bit IE on 64-bit Windows 7‘}
10         response=requests.get(url,headers=headers)
11         if response.status_code==200:
12             return response.text
13         return None
14     except RequestException:
15         return None
16 
17 def parse_one_page(html):
18     pattern=re.compile(‘<dd>.*?board-index.*?>(\d+)</i>.*?data-src="(.*?)".*?name"><a.*?>(.*?)</a>.*?star">(.*?)</p>.*?releasetime">(.*?)</p>.*?integer">(.*?)</i>.*?fraction">(.*?)</i>.*?</dd>‘,re.S)
19     items=re.findall(pattern,html)
20     for item in items:
21         yield{
22             ‘index‘:item[0],
23             ‘image‘:item[1],
24             ‘title‘:item[2],
25             ‘actor‘:item[3].strip()[3:],
26             ‘time‘:item[4].strip()[5:],
27             ‘score‘:item[5]+item[6]
28         }
29 
30 def write_to_file(content):
31     with open(‘result.txt‘,‘a‘,encoding=‘utf-8‘) as f:
32         f.write(json.dumps(content,ensure_ascii=False)+‘\n‘)
33         f.close()
34 
35 
36 def main(offset):
37     url=‘http://maoyan.com/board/4?offset=‘+str(offset)
38     html=get_one_page(url)
39     for item in parse_one_page(html):
40         print(item)
41         write_to_file(item)
42 
43 if __name__==‘__main__‘:
44         pool=Pool()
45         pool.map(main,[i*10 for i in range(10)])