我们将通过下面的举例来说明两个函数的区别
首先打开一个网页https://blog.csdn.net/xiaohukun/article/details/77679134
这是一篇博客，审查元素，选取如下图元素
使用children函数，代码为
from urllib import request
from bs4 import BeautifulSoup
if __name__ == '__main__':
url = 'https://blog.csdn.net/xiaohukun/article/details/77679134'
html = request.urlopen(url)
bsobj = BeautifulSoup(html)
for child in bsobj.find('div',{'class':'article-info-box'}).children:
print(child)
输出为：
使用descendants函数，代码为
from urllib import request
from bs4 import BeautifulSoup
if __name__ == '__main__':
url = 'https://blog.csdn.net/xiaohukun/article/details/77679134'
html = request.urlopen(url)
bsobj = BeautifulSoup(html)
for child in bsobj.find('div',{'class':'article-info-box'}).descendants:
print(child)
输出为：
通过观察两个函数的输出结果，children函数输出所有的子标签和后代标签，descendants函数在children函数输出的基础上把后代标签循环输出。