Python爬蟲（二） 再探豆瓣Top250

2.設定**(構造ip池)：看過很多大牛的回答，設定**不失為乙個好方法，由於囊中羞澀，所以決定去爬取乙個免費****的ip(免費** **隨後附上)。但是免費的**一來不穩定，二來需要經常的更換，嘗試了一番之後還是決定使用有償ip，畢竟也不貴。通過包裝本地ip，可以很方便的去爬取**資訊。

原始碼如下：

# -*- coding: utf-8 -*-

# @time    : 2018/1/8 14:05
# @author  : rkgg
# @file    : reptile_douban_top250_comments.py
# @software: pycharm
import requests
from bs4 import beautifulsoup
import codecs
import re
import time
import ua
import random
1.獲取單個top250影片頁面
3.記錄下來
'''host_url = ''
headers = 
proxies = 
def getproxies():
proxies = {}
for page in range(1,5):
url = ''+str(page)
html = requests.get(url,headers=headers).text
soup = beautifulsoup(html,"html.parser")
ip_list = soup.find('table',attrs=)
for ip_tr in ip_list.find_all('tr',attrs=):
ip = ip_tr.find_all('td')[1].gettext()
port = ip_tr.find_all('td')[2].gettext()
protocol = ip_tr.find_all('td')[5].gettext()
proxies[protocol] = protocol +':'+ ip+':'+port
# print('page--->'+str(page))
# print(proxies)
return proxies
def gethtml(url):
# headers = 
data = requests.get(url,headers=headers,params=proxies)
return data.text
def parse_html(html):
soup = beautifulsoup(html,"html.parser")
response = soup.find('ol',attrs=)
movies_list = 
for movies_li in response.find_all('li'):
detail = movies_li.find('div', attrs=)
movie_name = detail.find('span', attrs=).gettext()
# 獲取單個影片頁面
movies_url = detail.find('a')['href']
hot_list = 
movies_comments_url = movies_url + 'comments?sort=new_score&status=p'
comment_data = gethtml(movies_comments_url)
comment_soup = beautifulsoup(comment_data, "html.parser")
head_info = comment_soup.find('head').find('title').gettext()
if head_info!='頁面不存在':
comments_list = comment_soup.find('div', attrs=)
hot_comments = comments_list.find('div', attrs=).find('p').gettext()
movie_detail = movie_name + ':' + hot_list[0]
time.sleep(random.randint(1,10))
print(hot_list[0])
continue
else:
print('頁面失效！')
# 跳轉頁面
next_page = soup.find('span', attrs=).find('a')
# print('--->'+next_page)
if next_page:
return movies_list, host_url + next_page['href']
return movies_list,none
if __name__ == '__main__':
url = host_url
with codecs.open('movies_hot_comments.txt','w',encoding='utf-8') as fp:
while url:
html = gethtml(url)
# print(html)
movies, url = parse_html(html)
fp.write(u'\n'.join(movies))
下面是爬取免費**的原始碼：
import requests
from bs4 import beautifulsoup
import time
import random
import re
headers = 
def getproxies():
proxies = {}
# for page in random.ra(1,5):
url = ''+str(random.randint(1,5))
html = requests.get(url,headers=headers).text
soup = beautifulsoup(html,"html.parser")
ip_list = soup.find('table',attrs=)
for ip_tr in ip_list.find_all('tr',attrs=):
ip = ip_tr.find_all('td')[1].gettext()
port = ip_tr.find_all('td')[2].gettext()
protocol = ip_tr.find_all('td')[5].gettext()
proxies[protocol.lower()] = protocol.lower() +'://'+ ip+':'+port
# print('page--->'+str(page))
print(proxies)
time.sleep(random.randint(0,3))
return proxies

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