python requests + xpath 获取分页详情页数据存入到txt文件中

直接代码，如有不懂请加群讨论
# *-* coding:utf-8 *-*  #
import json
import requests
import pytesseract
import time
import datetime
from PIL import Image
from bs4 import BeautifulSoup
import urllib3
import random
import os

from lxml import etree

headers = {
    "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
}

session = requests.session()

url = 'https://www.saikr.com/'

def get_index():
    '''
    直接访问活动页面
    :return:
    '''
    response = session.get(url+'activity',headers=headers)
    response.encoding = 'utf8'
    return response.content

def get_page(res = ''):
    '''
    获取数据进行存储
    :return:
    '''
    if res:
        html = etree.HTML(res)
    else:
        html = etree.HTML(get_index())
        #获取尾页数据
        lastpage = html.xpath('//li[@class="last"]/a/@data-ci-pagination-page')[0]
        #从第一页开始爬取
        for p in range(1, int(lastpage)):
            net_url = url + 'activity/' + str(p)
            response = session.get(net_url, headers=headers)
            response.encoding = 'utf8'
            get_page(response.content)
    #得到详情页数据
    items = html.xpath('//div[@id="activeLoadContentBox"]/ul/li')
    title = ''
    for item in items:
        at_url = item.xpath('./div/h3/a/@href')[0]
        at_title = item.xpath('./div/h3/a/text()')[0]
        title = at_title.strip() + '
'
        get_content(at_url,title)

def get_content(u,t):
    res = session.get(u, headers=headers)
    html = etree.HTML(res.content)
    items = html.xpath('//div[@class="new-active-box"]/ul/li')

    result = t

    for item in items:
        title = item.xpath('./span/text()')[0]
        cont = item.xpath('./div/p[1]/text()')
        #结束时间
        cont2 = item.xpath('./div/p[2]/text()')
        if cont2:
            endtime = cont2[0]
        else:
            endtime = ''
        if cont:
            conts = cont
        else:
            conts = item.xpath('./p/text()')
        if conts[0].strip() == '':
            conts = item.xpath('./p/span/text()')

        result += title.strip() +conts[0].strip() + endtime + '
'


    print(result)
    file = os.getcwd() + '/active.txt'
    output = open(file, 'a')
    output.write(result)
    output.close()
if __name__ == '__main__':
    get_page()

运行：