BeautifulSoup模块过滤掉html标签,只拿文本内容，处理XSS攻击

from bs4 import BeautifulSoup
#kindeditor
def kindeditor(request):
    s = '''
        <li><span >默认值: false</span></li>
    　　'''
    bs = BeautifulSoup(s,"html.parser")
    print(bs.text)
    return render(request,"KindEditor.html")
结果:
只获取到了   默认值: false

s = '''
    <li><span >默认值: false</span></li>
    <a href="http://111111">test</a>
'''
bs = BeautifulSoup(s,"html.parser")
print(bs.text)
for tag in bs.find_all(): #查找所有的标签 按层级查找的
    print(tag.name)  #显示标签名
    print(tag.get("href")) #获取href标签的内容
    if tag.name in ["span"]: #里面是否有span标签
        tag.decompose()   #删除span 标签
print(bs)
return render(request,"KindEditor.html")