main.py

# coding=utf8

import os
import time
import request
from lxml import html


def get_page_url(pid):
    if pid == 1:
        return "http://www.imeitou.com/nvsheng/mnns/index.html"
    else:
        return "http://www.imeitou.com/nvsheng/mnns/index_{}.html".format(pid)


def main():
    page = request.get_url('http://www.imeitou.com/nvsheng/mnns/index.html')
    root = html.document_fromstring(page)
    ele = root.xpath('/html/body/div[5]/div[2]/ul/div/div/span[3]/strong[1]')
    page_number = int(ele[0].text)
    for pid in range(1, page_number+1):
        page_url = get_page_url(pid)
        page = request.get_url(page_url)

        page_root = html.document_fromstring(page)

        eles = page_root.xpath('/html/body/div[5]/div[2]/ul/li/a/img')
        for ele in eles:
            image_url = ele.attrib['src']
            img = request.get_url(image_url)
            local_path = os.path.join(os.getcwd(), 'images', image_url.split('/')[-1])
            with open(local_path, 'wb') as f:
                f.write(img)
            time.sleep(0.1)
        time.sleep(0.2)


if __name__ == '__main__':
    main()

request.py

# coding=utf8

import requests


def get_url(url):
    session = requests.Session()
    session.headers.update({
        'Origin': 'http://www.imeitou.com',
        'Referer': 'http://www.imeitou.com/nvsheng/mnns/index.html',
        'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36',
        'Cookie': 'Hm_lvt_1ef6d22326fe2c0f9411d7294ca6d902=1565681953,1565682000; Hm_lpvt_1ef6d22326fe2c0f9411d7294ca6d902=1565950344'
    })
    return session.get(url).content


if __name__=="__main__":
    print(get_url('http://www.imeitou.com/nvsheng/mnns/index.html'))