以下是代码：

import requests, sys
class downloader(object):
    def __init__(self):
        self.server = 'http:/XXXXXXXX.net/'
        self.target = 'http://m.XXXXXXXX.net/21/21323/'
        self.names = []
        self.urls = []
        self.nums = 0
    def get_download_url(self):
        req = requests.get(url = self.target)
        html = req.text
        bf= BeautifulSoup(html,'lxml')
        div_bf = BeautifulSoup(html,'lxml')
        div = div_bf.find_all('div', class_ = 'listmain')
        a_bf = BeautifulSoup(str(div[0]))
        a = a_bf.find_all('a')
        self.nums = len(a[15:])
        for each in a[15:]:
            self.names.append(each.string)
            self.urls.append(self.server + each.get('href'))
    def get_contents(self, target):
       req = requests.get(url = target)
       html = req.text
       bf = BeautifulSoup(html)
       texts = bf.find_all('div', class_ = 'showtxt')
       texts = texts[0].text.replace('\xa0'*8,'\n\n')
       return texts
    def writer(self, name, path, text):
        write_flag = True
        with open(path, 'a', encoding='utf-8') as f:
            f.write(name + '\n')
            f.writelines(text)
            f.write('\n\n')

if __name__ == "__main__":
    dl = downloader()
    dl.get_download_url()
    print('开始下载：')
    for i in range(dl.nums):
        dl.writer(dl.names[i], '文本文档.txt', dl.get_contents(dl.urls[i]))
    sys.stdout.write(" ?已下载:%.3f%%" % float(i/dl.nums) + '\r')
    sys.stdout.flush()
    print('下载完成')```