Python爬虫包BeautifulSoup实例（三）

# -*- coding: utf-8 -*-
# @Author: HaonanWu
# @Date:  2016-12-22 16:16:08
# @Last Modified by:  HaonanWu
# @Last Modified time: 2016-12-22 20:17:13

import urllib
import urllib2
import re
import os

if __name__ == '__main__':
  # 访问网址并抓取源码
  url = 'http://www.qiushibaike.com/textnew/page/1/"htmlcode">

# -*- coding: utf-8 -*-
# @Author: HaonanWu
# @Date:  2016-12-22 16:16:08
# @Last Modified by:  HaonanWu
# @Last Modified time: 2016-12-22 20:17:13

import urllib
import urllib2
import re
import os

if __name__ == '__main__':
  # 访问网址并抓取源码
  url = 'http://www.qiushibaike.com/textnew/page/1/"content">.*"htmlcode">

# -*- coding: utf-8 -*-
# @Author: HaonanWu
# @Date:  2016-12-22 16:16:08
# @Last Modified by:  HaonanWu
# @Last Modified time: 2016-12-22 21:41:32

import urllib
import urllib2
import re
import os

if __name__ == '__main__':
  # 访问网址并抓取源码
  url = 'http://www.qiushibaike.com/textnew/page/1/"content">.*"htmlcode">

# -*- coding: utf-8 -*-
# @Author: HaonanWu
# @Date:  2016-12-22 16:16:08
# @Last Modified by:  HaonanWu
# @Last Modified time: 2016-12-22 20:17:13

import urllib
import urllib2
import re
import os

if __name__ == '__main__':
  # 访问网址并抓取源码
  path = './qiubai'
  if not os.path.exists(path):
    os.makedirs(path)
  user_agent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36'
  headers = {'User-Agent':user_agent}
  regex = re.compile('<div class="content">.*"htmlcode">

# -*- coding: utf-8 -*-
# @Author: HaonanWu
# @Date:  2016-12-22 16:16:08
# @Last Modified by:  HaonanWu
# @Last Modified time: 2016-12-22 21:34:02

import urllib
import urllib2
import re
import os
from bs4 import BeautifulSoup

if __name__ == '__main__':
  url = 'http://www.qiushibaike.com/textnew/page/1/"div", class_="content")

  for item in items:
    try:
      content = item.span.string
    except AttributeError as e:
      print e
      exit()

    if content:
      print content + "\n"


这是用BeautifulSoup去抓取书本以及其价格的代码 

可以通过对比得出到bs4对标签的读取以及标签内容的读取 

（因为我自己也没有学到这一部分，目前只能依葫芦画瓢地写）


# -*- coding: utf-8 -*-
# @Author: HaonanWu
# @Date:  2016-12-22 20:37:38
# @Last Modified by:  HaonanWu
# @Last Modified time: 2016-12-22 21:27:30
import urllib2
import urllib
import re 

from bs4 import BeautifulSoup 


url = "https://www.packtpub.com/all"
try:
  html = urllib2.urlopen(url) 
except urllib2.HTTPError as e:
  print e
  exit()

soup_packtpage = BeautifulSoup(html, 'lxml') 
all_book_title = soup_packtpage.find_all("div", class_="book-block-title") 

price_regexp = re.compile(u"\s+\$\s\d+\.\d+") 

for book_title in all_book_title: 
  try:
    print "Book's name is " + book_title.string.strip()
  except AttributeError as e:
    print e
    exit()
  book_price = book_title.find_next(text=price_regexp) 
  try:
    print "Book's price is "+ book_price.strip()
  except AttributeError as e:
    print e
    exit()
  print ""


以上全部为本篇文章的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

        

            
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