import urllib.request
from urllib import parse
from lxml import etree


class Tieba():
 def __init__(self):
 pass


 def sendRequest(self,url,begin,end):
 headers = {"User-Agent": "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0"}
 for value in range(begin,end+1):
 index = value - 1 * 50
 u = "&pn="+str(index)
 fullurl = url + u
 print(fullurl)
 # request = urllib.request.Request(fullurl,headers=headers)
 # response = urllib.request.urlopen(request)
 # print(response.read())

if __name__ == "__main__":
 url = "https://tieba.baidu.com/f?"
 keyword = input("请输入搜寻的关键字 >>")
 beginPage = int(input("请输入起始页 >>"))
 endPage = int(input("请输入结束页 >>"))
 kw = parse.urlencode({"kw",keyword})
 fullurl = url + kw
 pattern = Tieba()
 pattern.sendRequest(url,beginPage,endPage)