爬虫，老是报错说我的index超出range

import sys

import requests
from bs4 import BeautifulSoup

class downloader():
    def __init__(self):
        self.server='https://www.biqukan.com'
        self.book='https://www.biqukan.com/18_18805'
        self.names=[]
        self.urls=[]

    def get_url(self):
        re=requests.get(self.book)
        bs=BeautifulSoup(re.text,features='html5lib')
        div = bs.find_all('div', class_='listmain')
        bs_child = BeautifulSoup(str(div[0]), features="html5lib")
        div_a = bs_child.find_all('a')
        div_a = div_a[12:]
        for a in div_a:
            self.names.append(a.string)
            self.urls.append(self.server + a.get('href'))
        # for i in range(len(self.names)):
        #     print(self.names[i], ' ', self.urls[i])


    def get_content(self,url):
        re = requests.get(url)
        bs=BeautifulSoup(re.text,features='html5lib')
        content=bs.find_all('div',id='content')
        text=content[0].text
        # print(text)
        return text

    def save(self,path,name,text):
        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_url()
    print('《地球唯一修士》开始下载：')
    for i in range(len(dl.urls)):
        t=dl.get_content(dl.urls[i])
        dl.save('novel.txt', dl.names[i],t)
        sys.stdout.write("已下载：{:.3f}".format(i/len(dl.names))+'\r')
        sys.stdout.flush()
    print("《地球唯一修士》下载完毕！")

Traceback (most recent call last):
File "test.py", line 47, in
t=dl.get_content(dl.urls[i])
File "test.py", line 31, in get_content
text=content[0].text
IndexError: list index out of range

有可能是content里面没有内容，你检查下。

这个原因多半是页面发生变化造成的了，因为不清楚你的目标页，这种原因可能性太多了，比如页面弹框了，不稳定了，加验证了等等，最后造成content没有内容，甚至是根本没拿到content，建议对拿到的内容做一个检测，实现断点或者数据量小时直接记录异常链接跳过它，后续手动处理