Python 3.0安装BeautifulSoup插件并使用 与Python 2 version of Beautiful Soup under Python 3问题处理

Python 3.0安装BeautifulSoup插件并使用

 

 

Python3.0 对BeautifulSoup的兼容性不是特别好，安装后 使用import bs4 from BeautifulSoup 

 

1. 先下载beautifulSoup 点击打开链接

  https://www.crummy.com/software/BeautifulSoup/bs4/download/ 

python setup,py install 安装 如果装在C盘 最好用 管理员身份打开

2. 

 

       输入python
      然后输入 from bs4 import BeautifulSoup

出现异常：

 

Windows下安装BeautifulSoup4显示'You are trying to run the Python 2 version of Beautiful Soup under Python 3.(`python setup.py install`) or by running 2to3 (`2to3 -w bs4`).'

 

beautifulsoup4解压目录（beautifulsoup4-4.6.0\bs4）和 2to3.py（D:\Python安装目录\Tools\scripts\）复制到python的安装目录下的Lib(D:\Python安装目录\Lib)文件夹下

执行命令：

 

Python 2to3.py-w bs4

 

 

 

 

 

                                                    

 

                                                    

 

                                                    

 

                                                    

如何使用参考：点击打开链接    点击打开链接

 

#!/usr/bin/env python
#coding:utf-8
# 根据易迅网的商品ID，爬取商品价格信息。
# By Tsing
# Python 2.7.9

import urllib.request as request
from bs4 import BeautifulSoup
def get_yixun(id):
    price_origin,price_sale = '0','0'
    headers = {
    'User-Agent': 'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6'
    }

    #url = 'http://item.yixun.com/item-' + id + '.html'
    url ='http://baidu.com'
    req = request.Request(url=url, headers=headers)
    html = request.urlopen(req).read().decode('utf-8')
    #print(html)
    soup = BeautifulSoup(html,'lxml')
    print('soup')
    print(soup.prettify())
    print("class")
    print(soup.div)
   # title = request.unicode(soup.title.text.strip().strip(u'【价格_报价_图片_行情】-易迅网').replace(u'】','')).encode('utf-8').decode('utf-8')
   # print(title)
    try:
        soup_origin = soup.find("dl", { "class" : "xbase_item xprice xprice_origin" })
        price_origin = soup_origin.find("span", { "class" : "mod_price xprice_val" }).contents[1].text 
        print( u'原价：' + price_origin)
    except:
        pass
    try:
        soup_sale= soup.find('dl',{'class':'xbase_item xprice'})
        price_sale = soup_sale.find("span", { "class" : "mod_price xprice_val" }).contents[1] 
        print (u'现价：'+ price_sale)
    except:
        pass

    print(url)
    return None

if __name__ == '__main__':
    get_yixun('2189654')