class BaiduSpider(object):

    def __init__(self):

        self.url = 'http://tieba.baidu.com/f?kw={}&pn={}'

        self.headers = {'User-Agent':'Win7:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.163 Safari/535.1'}

 #获取页面

     def get_page(self,url):

         #定义请求对象

         req = request.Request(url=url,headers=self.headers)

         #发起请求

         res = request.urlopen(req)

         #获取相应对象

         html = res.read().decode('utf-8', 'ignore')

         return html

#保存数据

    def write_page(self,filename,html):

        #将数据保存到本地

        with open(filename,'w',encoding='utf-8') as f:

            f.write(html)

#主函数

    def main(self):

        name = input('请输入贴吧名:>>>>')

        start = int(input('请输入起始页'))

        end = int(input('请输入终止页'))

        for page in range(start,end+1):

            #拼接URL地址 'http://tieba.baidu.com/f?kw{}&pn={}'

            #进行编码 将中文字符编码为url地址编码

            kw = parse.quote(name)

            #获取当前页数

            pn = (page-1)*50

            #进行url地址的拼接

            url = self.url.format(kw,pn)

            #获取相应

            html = self.get_page(url)

            filename = '{}-第{}页.html'.format(name,page)

            self.write_page(filename,html)

            #提示

            print('第{}页爬取成功'.format(page))

            #控制爬取速度

            time.sleep(random.randint(1,3))

#导入模块

from urllib import request,parse

import time

import random

class BaiduSpider(object):

    def __init__(self):

        self.url = 'http://tieba.baidu.com/f?kw={}&pn={}'

        self.headers = {'User-Agent':'Win7:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.163 Safari/535.1'}

    #获取页面

    def get_page(self,url):

        #定义请求对象

        req = request.Request(url=url,headers=self.headers)

        #发起请求

        res = request.urlopen(req)

        #获取相应对象

        html = res.read().decode('utf-8', 'ignore')

        return html

    #解析数据

    def parse_page(self):

        pass

    #保存数据

    def write_page(self,filename,html):

        #将数据保存到本地

        with open(filename,'w',encoding='utf-8') as f:

            f.write(html)

    #主函数

    def main(self):

        name = input('请输入贴吧名:>>>>')

        start = int(input('请输入起始页'))

        end = int(input('请输入终止页'))

        for page in range(start,end+1):

            #拼接URL地址 'http://tieba.baidu.com/f?kw{}&pn={}'

            #进行编码 将中文字符编码为url地址编码

            kw = parse.quote(name)

            #获取当前页数

            pn = (page-1)*50

            #进行url地址的拼接

            url = self.url.format(kw,pn)

            #获取相应

            html = self.get_page(url)

            filename = '{}-第{}页.html'.format(name,page)

            self.write_page(filename,html)

            #提示

            print('第{}页爬取成功'.format(page))

            #控制爬取速度

            time.sleep(random.randint(1,3))

if __name__ == '__main__':

    spider = BaiduSpider()

    spider.main()