爬虫_电影天堂 热映电影（xpath）

Posted 2020-12-27 mc-curry

写了一天才写了不到100行。不过总归是按自己的思路完成了

  1 import requests
  2 from lxml import etree
  3 import time
  4 
  5 BASE = ‘http://www.dytt8.net‘
  6 def get_one_page(url):
  7     headers = {‘User-Agent‘: ‘Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (Khtml, like Gecko) Chrome/68.0.3440.75 Safari/537.36‘}
  8     try:
  9 
 10         response = requests.get(url, headers=headers)
 11         response.encoding = response.apparent_encoding
 12         return response.text
 13     except:
 14         return 0
 15 
 16 
 17 
 18 def parse_one_page_href(html):
 19     str_hrefs = []
 20     html_element = etree.HTML(html)
 21     # //div[@class="co_content8"]/ul/table//a/@href
 22     hrefs = html_element.xpath(‘//table[@class="tbspan"]//a/@href‘)
 23     for href in hrefs:
 24         href = BASE + href 
 25         str_hrefs.append(href)
 26     return str_hrefs
 27 
 28 """
 29 return 
 30     [‘http://www.dytt8.net/html/gndy/dyzz/20180731/57193.html‘, 
 31      ‘http://www.dytt8.net/html/gndy/dyzz/20180730/57192.html‘, 
 32                     ......
 33      ‘http://www.dytt8.net/html/gndy/dyzz/20180702/57064.html‘,
 34      ‘http://www.dytt8.net/html/gndy/dyzz/20180630/57056.html‘]
 35 """
 36 
 37 
 38 
 39 def get_all_pages(page_nums):
 40     hrefs = []
 41     for index in range(1, page_nums + 1):
 42         url = ‘http://www.dytt8.net/html/gndy/dyzz/list_23_‘ + str(index) + ‘.html‘
 43         html = get_one_page(url)
 44         while html == 0:
 45             time.sleep(3)
 46             html = get_one_page(url)
 47         hrefs.extend(parse_one_page_href(html))
 48     return hrefs
 49 
 50 
 51 def get_detail(page_nums):
 52     movie = []
 53     hrefs = get_all_pages(page_nums)
 54     for href in hrefs:  #href: every page url
 55         informations = {}
 56         
 57         response = requests.get(href)
 58         response.encoding = response.apparent_encoding
 59         html = response.text
 60         
 61         html_element = etree.HTML(html)
 62 
 63         title = html_element.xpath(‘//font[@color="#07519a"]/text()‘)[0]
 64         informations[‘title‘] = title
 65 
 66         image_src = html_element.xpath(‘//p//img/@src‘)
 67         informations[‘image_src‘] = image_src[0]
 68         
 69         download_url = html_element.xpath(‘//td[@bgcolor="#fdfddf"]/a/@href‘)
 70         informations[‘download_url‘] = download_url
 71 
 72         texts = html_element.xpath(‘//div[@id="Zoom"]//p/text()‘)
 73         for index, text in enumerate(texts):
 74 
 75             if text.startswith(‘◎片　　名‘):
 76                 text = text.replace(‘◎片　　名‘, ‘‘).strip()
 77                 informations[‘english_name‘] = text
 78 
 79             elif text.startswith(‘◎产　　地‘):
 80                 text = text.replace(‘◎产　　地‘, ‘‘).strip()
 81                 informations[‘location‘] = text
 82 
 83             elif text.startswith(‘◎上映日期‘):
 84                 text = text.replace(‘◎上映日期‘, ‘‘).strip()
 85                 informations[‘date‘] = text
 86 
 87             elif text.startswith(‘◎片　　长‘):
 88                 text = text.replace(‘◎片　　长‘, ‘‘).strip()
 89                 informations[‘time‘] = text
 90 
 91             elif text.startswith(‘◎导　　演‘):
 92                 text = text.replace(‘◎导　　演‘, ‘‘).strip()
 93                 informations[‘director‘] = text
 94 
 95             elif text.startswith(‘◎主　　演‘):
 96                 text = text.replace(‘◎主　　演‘, ‘‘).strip()
 97                 actors = []
 98                 actors.append(text)
 99                 for x in range(index+1, len(texts)):
100                     actor = texts[x].strip()
101                     if texts[x].startswith(‘◎简　　介‘):
102                         break
103                     actors.append(actor)
104                 informations[‘actors‘] = actors
105 
106             elif text.startswith(‘◎简　　介 ‘):
107                 text = text.replace(‘◎简　　介 ‘, ‘‘).strip()
108                 intros = []
109                 # intros.append(text)
110                 for x in range(index+1, len(texts)):
111                     intro = texts[x].strip()
112                     if texts[x].startswith(‘◎获奖情况‘):
113                         break
114                     intros.append(intro)
115                 informations[‘intros‘] = intros
116         movie.append(informations)
117     return movie
118 
119 
120 def main():
121     page_nums = 1  #176
122     movie = get_detail(page_nums)
123     print(movie)
124 
125 
126 if __name__ == ‘__main__‘:
127     main()

运行结果：（选中的是一部电影， 一页中有25部电影，网站里一共有176页）

感受到了代码的魅力了吗