爬虫_豆瓣电影top250 （正则表达式）

一样的套路，就是多线程还没弄
 1 import requests
 2 import re
 3 import json
 4 
 5 headers = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36'
 6 
 7 def get_one_page(url):
 8     try:
 9         html = requests.get(url, headers={'User-Agent':'headers'})
10         if html.status_code == 200:
11             return html.text
12         return None
13     
14     except RequestsException:
15         return None
16 
17 
18 
19 def write_txt(content):
20     with open('result.txt', 'a', encoding='utf-8') as f:
21         f.write(json.dumps(content, ensure_ascii=False) + '
')
22         f.close
23 
24 def parse_one_page(html):
25     # <em class="">(d+)</em>
26     # .*?href="(.*?)/">.*?
27     # other">(w+)</span
28     match = re.compile('.*?<em class="">(.*?)</em>.*?href="(.*?)/">.*?"title">(.*?)</span.*?other">(.*?)</span', re.S)
29     results = re.findall(match, html)
30     for item in results:
31         yield{
32             'range': item[0],
33             'movie_main_page': item[1],
34             'movie_title': item[2],
35             'other_name': item[3].strip()[13:]
36         }
37     # print(results)
38 
39 def main():
40     for start in range(0, 250, 25):
41         url = 'https://movie.douban.com/top250?start=' + str(start)
42         html = get_one_page(url)
43         for item in parse_one_page(html):
44             print(item)
45             write_txt(item)
46 
47 
48 
49 if __name__ == '__main__':
50     main()
运行结果