使用python访问网页

python版本：3

访问页面:

import urllib.request

url="https://blog.csdn.net/qq_33160790"
req=urllib.request.Request(url)
resp=urllib.request.urlopen(req)
data=resp.read().decode('utf-8')

print(data)

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效果：

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抓取csdn页面中文章的链接：
xpath语法可以看这篇文章：
http://www.w3school.com.cn/xpath/xpath_syntax.asp

from lxml import etree
import requests

url='https://blog.csdn.net/qq_33160790'
resp=requests.get(url)
if resp.status_code==requests.codes.ok:
        html=etree.HTML(resp.text)
        hrefs=html.xpath('////span[@class="link_title"]/a/@href')
        for href in hrefs:
                print href

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效果：

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打印出所有文章url：

from lxml import etree
import requests

for i in range(1,23):   #23 is equal to pagelist-1
        #print(i)
        url='https://blog.csdn.net/qq_33160790/article/list/'+str(i)
        resp=requests.get(url)
        if resp.status_code==requests.codes.ok:
                html=etree.HTML(resp.text)
                hrefs=html.xpath('////span[@class="link_title"]/a/@href')
                for href in hrefs:
                        print href

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刷csdn点击脚本：
PS：url和23结合实际修改

from lxml import etree
import requests
import urllib.request

for i in range(1,23):   #23 is equal to pagelist-1
        #print(i)
        url='https://blog.csdn.net/qq_33160790/article/list/'+str(i)
        resp=requests.get(url)
        if resp.status_code==requests.codes.ok:
                html=etree.HTML(resp.text)
                hrefs=html.xpath('////span[@class="link_title"]/a/@href')
                for href in hrefs:
                        print (href)
                        req=urllib.request.Request(href)
                        data=urllib.request.urlopen(req).read()