成果

根据关键词文件(一行一个)关键词,找出每个关键词在百度排名前十的二级域名:
这样如果输入的是一个行业的关键词,可以比较快速的找出seo的竞争对手,也是一种比较粗暴的对手监控

代码1

直接采集搜索结果出现的地址

采集1.png

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#encoding=utf-8
from __future__ import division
import time
import requests #用于web页面抓取，很简单，需要单独安装，安装很简单。
import re
from bs4 import BeautifulSoup
kws=open(r'C:\Users\Administrator\Desktop\keywords.txt','r') #盘符可以任意修改，注意不能有空行，初始url文本
morekwsall=open(r'C:\Users\Administrator\Desktop\jzdsbs4.txt','w+',encoding='utf-8')#注意编码
headers1={
    'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'Accept-Encoding':'gzip,deflate',
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/31.0.1650.63 Safari/537.36'
    'Refer':'http://www.hao123.com/',
    'Cache-Control':'max-age=0',
    'Cookie':'BAIDUID=8A69D49EC2D3B576D17277579AEDA83F:FG=1; BIDUPSID=8A69D49EC2D3B576D17277579AEDA83F; PSTM=1463384511; ' \
                 'BDUSS=2ZESWpnckRaeHRkVjdqN3dJa0RINWNrSDJTbm1sRFVlRUMzelNCVTBwSEliY0ZYQVFBQUFBJCQAAAAAAAAAAAEAAAAVcMhIYWFzZDEzM' \
                 'jM0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMjgmVfI4JlXY; ' \
                 'uc_login_unique=f62bbe2bfc4a840aa437e67dcde239a3; BD_HOME=1; BDRCVFR[S4-dAuiWMmn]=I67x6TjHwwYf0; B64_BOT=1; ' \
                 'BD_UPN=12314353; sug=3; sugstore=1; ORIGIN=2; bdime=0; ' \
                 'BDRCVFR[feWj1Vr5u3D]=I67x6TjHwwYf0; BD_CK_SAM=1; H_PS_PSSID=1428_18280_21116_20592_21189_21160_20929; BDSVRTM=0'
}
kwsline=kws.readlines()
for kw in kwsline:
    utfline= kw.strip()
    utzfline=utfline
    time.sleep(2)  # 还是不能太猖獗
    o = 0
    try:
        urlbaidu1=str('http://www.baidu.com/baidu?wd='+utzfline+'&tn=monline_4_dg')
        rbaidu1 = requests.get(urlbaidu1,headers= headers1,allow_redirects = False)
        print(rbaidu1.status_code)
        soup = BeautifulSoup(rbaidu1.content,'lxml')
        result_urls = soup.select('.c-showurl')
        for result_url in result_urls:
            final_result = result_url.get_text().split('/')[0].split('-')[0].replace('\n', '')\
                .replace(' ', '').replace('...', '').replace('...', '')
            print(final_result)
            morekwsall.write(final_result+'\n')
    except Exception as e:
        o = o+1
        print(e)
        time.sleep(100)
        kwsline.append(kw)
    finally:
        print(o)
kws.close()
morekwsall.close()

print(u'结束!!!')

注意：
当request出错时，等100s，把出错的地址塞回列表继续采集
50出错，等100s，再采集50

 except Exception as e:
        o = o+1
        print(e)
        time.sleep(100)
        kwsline.append(kw)

代码2：
获得搜索结果百度跳转后的实际地址。。。


#!/usr/bin/env python
# -*- coding: utf-8 -*-
#encoding=utf-8
from __future__ import division
import time
import requests #用于web页面抓取，很简单，需要单独安装，安装很简单。
import re
from bs4 import BeautifulSoup
from urllib import request
kws=open(r'C:\Users\Administrator\Desktop\keywords.txt','r') #盘符可以任意修改，注意不能有空行，初始url文本
morekwsall=open(r'C:\Users\Administrator\Desktop\jzds.txt','w+',encoding='utf-8')#注意编码
morekwserror=open(r'C:\Users\Administrator\Desktop\jzds_error.txt','w+',encoding='utf-8')
headers1={
    'Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
    'Accept-Encoding':'gzip,deflate',
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/31.0.1650.63 Safari/537.36'
    'Refer':'http://www.hao123.com/',
    'Cache-Control':'max-age=0',
    'Cookie':'BAIDUID=8A69D49EC2D3B576D17277579AEDA83F:FG=1; BIDUPSID=8A69D49EC2D3B576D17277579AEDA83F; PSTM=1463384511; ' \
                 'BDUSS=2ZESWpnckRaeHRkVjdqN3dJa0RINWNrSDJTbm1sRFVlRUMzelNCVTBwSEliY0ZYQVFBQUFBJCQAAAAAAAAAAAEAAAAVcMhIYWFzZDEzM' \
                 'jM0AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMjgmVfI4JlXY; ' \
                 'uc_login_unique=f62bbe2bfc4a840aa437e67dcde239a3; BD_HOME=1; BDRCVFR[S4-dAuiWMmn]=I67x6TjHwwYf0; B64_BOT=1; ' \
                 'BD_UPN=12314353; sug=3; sugstore=1; ORIGIN=2; bdime=0; ' \
                 'BDRCVFR[feWj1Vr5u3D]=I67x6TjHwwYf0; BD_CK_SAM=1; H_PS_PSSID=1428_18280_21116_20592_21189_21160_20929; BDSVRTM=0'
}        
kwsline=kws.readlines()
for kw in kwsline:
    utfline= kw.strip()
    utzfline=utfline
    urlbaidu1=str('http://www.baidu.com/baidu?wd='+utzfline+'&tn=monline_4_dg')
    try:
        rbaidu1 = requests.get(urlbaidu1,headers=headers1)
        soup = BeautifulSoup(rbaidu1.content,'lxml')
        result_urls = soup.select('div > h3 > a')
        for result_url in result_urls:
            #time.sleep(0.5)# 还是不能太猖獗
            try:
                with request.urlopen(result_url.get('href')) as f:
                    real_url = f.geturl()# 会有访问错误，所以获取失败实际地址失败，那失败应该怎么继续获得？
            except Exception as e:
                print("@@@")
                print(result_url)
                morekwserror.write(str(e) +':'+str(result_url) + '\n')
                print(e)
                real_url=('///')
                print(real_url.split('/')[2])
            finally:
                real_url2 = real_url.split('/')[2]
                print(real_url2)
                morekwsall.write(real_url2 + '\n')
    except Exception as e:
        print(e)
        print("!!!!")
        time.sleep(50)
        kwsline.append(kw)

kws.close()
morekwsall.close()

print(u'结束!!!')

多了1个try，因为
request.urlopen和f.geturl()在读取最终状态吗的403，404的页面的时候会出错；
我是想至少把错误地址也采集下来的，不过失败了，所以目前是略过了。。
第二个try50出错，开始51采集