豆瓣Top250

 """
 爬取豆瓣电影TOP250 - 完整示例代码
 """

 import codecs

 import requests
 from bs4 import BeautifulSoup

 DOWNLOAD_URL = 'http://movie.douban.com/top250/'

 def download_page(url):
     return requests.get(url, headers={
         'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.80 Safari/537.36'
     }).content

 def parse_html(html):
     soup = BeautifulSoup(html)
     movie_list_soup = soup.find('ol', attrs={'class': 'grid_view'})

     movie_name_list = []

     for movie_li in movie_list_soup.find_all('li'):
         detail = movie_li.find('div', attrs={'class': 'hd'})
         movie_name = detail.find('span', attrs={'class': 'title'}).getText()

         movie_name_list.append(movie_name)

     next_page = soup.find('span', attrs={'class': 'next'}).find('a')
     if next_page:
         return movie_name_list, DOWNLOAD_URL + next_page['href']
     return movie_name_list, None

 def main():
     url = DOWNLOAD_URL

     with codecs.open('movies', 'wb', encoding='utf-8') as fp:
         while url:
             html = download_page(url)
             movies, url = parse_html(html)
             fp.write(u'{movies}\n'.format(movies='\n'.join(movies)))

 if __name__ == '__main__':
     main()

原文链接：

https://zhuanlan.zhihu.com/p/20423182

感谢原po。