import requests

from fake_useragent import UserAgent
from bs4 import BeautifulSoup

ua = UserAgent()
useragent=ua.firefox
headers={'user-agent':useragent}
pm=True
def fanye():
    guanjianci = input('需要查询的关键词：')
    pages=int(input('需要查询前几页：'))
    wangzhi=input('目标网址：')
    for i in range(pages):
        if pm==True:
            num=i*10
            url='https://www.baidu.com/s?wd='+guanjianci+'&pn='+str(num)
            chaxun(wangzhi,url,i)
        else:
            break
def chaxun(wangzhi,url,num):
    global pm
    r = requests.get(url,headers=headers)
    soup=BeautifulSoup(r.text,'lxml')
    tits=soup.find_all('h3',class_='t')
    paiming = 1
    for biaoti in tits:

        lianjie=biaoti.a['href']

        try:
            r = requests.get(lianjie, headers=headers, allow_redirects=True)
        except:
            paiming += 1
            continue
        kwww=r.url
        # print(kwww)
        tuiurl=[]

        if kwww.find('www.baidu.com')!=-1:
            tuiurl.append(kwww)
        else:
            title = biaoti.text.strip()

            if kwww.find(wangzhi)!=-1:
                # title = biaoti.text.strip()
                print(num+1,paiming,title)
                pm=False
                break
            else:
                paiming+=1

if __name__ == '__main__':
    fanye()

比如输入关键词：深圳SEO，查询前10页，目标网址www.liaojinhua.com,输出结果为：4 8 深圳SEO优化技术交流分享-启明SEO博客,表示第四页，第8位，也就是48名。