Python3 黑板客爬虫闯关第二关

  

   

    

     

    
    

     

      #coding=utf-8
     
    
   

    

     

    
    

     

      import requests
     
    
   

    

     

    
    

     

      from requests.exceptions import RequestException
     
    
   

    

     

    
    

     

      from bs4 import BeautifulSoup
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      def getHtml(url,i):
     
    
   

    

     

    
    

     

       data = {"username":"admin",
     
    
   

    

     

    
    

     
 "password":i,}
     
    
   

    

     

    
    

     
 try:
     
    
   

    

     

    
    

     

       headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0'}  
     
    
   

    

     

    
    

     

       response = requests.post(url,data = data,headers = headers)
     
    
   

    

     

    
    

     
 if response.status_code == 200:
     
    
   

    

     

    
    

     
 return response.text
     
    
   

    

     

    
    

     
 return None
     
    
   

    

     

    
    

     
 except RequestException:
     
    
   

    

     

    
    

     
 return None
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      if __name__=='__main__':
     
    
   

    

     

    
    

     

       url = "http://www.heibanke.com/lesson/crawler_ex01/"
     
    
   

    

     

    
    

     
 for i in range(1,30):
     
    
   

    

     

    
    

     

       html = getHtml(url,i)
     
    
   

    

     

    
    

     
 if "密码错误" in html:
     
    
   

    

     

    
    

     
 continue
     
    
   

    

     

    
    

     
 print ("admin:{}".format(i))
     
    
  
 

考察点：分析网页，提交表单

文章来源: blog.csdn.net，作者：悦来客栈的老板，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/qq523176585/article/details/83019308