为什么选择用python做爬虫

import urllib
import urllib.request

def loadPage(url,filename):
 """
 作用：根据url发送请求，获取html数据;
 :param url:
 :return:
 """
 request=urllib.request.Request(url)
 html1= urllib.request.urlopen(request).read()
 return html1.decode('utf-8')

def writePage(html,filename):
 """
 作用将html写入本地

 :param html: 服务器相应的文件内容
 :return:
 """
 with open(filename,'w') as f:
 f.write(html)
 print('-'*30)
def tiebaSpider(url,beginPage,endPage):
 """
 作用贴吧爬虫调度器，负责处理每一个页面url;
 :param url:
 :param beginPage:
 :param endPage:
 :return:
 """
 for page in range(beginPage,endPage+1):
 pn=(page - 1)*50
 fullurl=url+"&pn="+str(pn)
 print(fullurl)
 filename='第'+str(page)+'页.html'
 html= loadPage(url,filename)

 writePage(html,filename)



if __name__=="__main__":
 kw=input('请输入你要需要爬取的贴吧名:')
 beginPage=int(input('请输入起始页'))
 endPage=int(input('请输入结束页'))
 url='https://tieba.baidu.com/f?'
 kw1={'kw':kw}
 key = urllib.parse.urlencode(kw1)
 fullurl=url+key
 tiebaSpider(fullurl,beginPage,endPage)