bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml.

迈不过友情╰ 2022-02-19 06:17 154阅读 0赞

linux导入lxml包时，报错bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?

from bs4 import BeautifulSoup
    soup = BeautifulSoup('<p>Hello</p>', 'lxml')
    print(soup.p.string)

Traceback (most recent call last):
      File "C:\Users\Lenovo\Desktop\Spider_1.py", line 6, in <module>
        soup = BeautifulSoup(req.content,"lxml")
      File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python35\lib\site-packages\bs4\__init__.py", line 165, in __init__
        % ",".join(features))
    bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?

这里需要注意的是在使用 pip install lxml时，自动安装的 4.1.1版本，

下载lxml 3.7.3安装后，问题则可解决:

pip install lxml==3.7.3（Python2）

pip install lxml==3.7.3（Python3）

若还是报错，问题仍然存在，则有可能是lxml包依赖的其他包没有安装，需要先安装其他包然后再安装lxml

安装python-pip：方便安装python的第三方包

\[root@\*\*\*\*\*\*/\]\# wget https://bootstrap.pypa.io/get-pip.py --no-check-cert

\[root@\*\*\*\*\*\*/\]\# python get-pip.py

ubuntu 下安装lxml：

安装依赖包   ：\[root@\*\*\*\*\*\*/\]\# `apt-get install libxml2-dev libxslt-dev python-dev`

然后安装lxml：\[root@\*\*\*\*\*\*/\]\# `apt-get install python-lxml`

centos 下安装lxml：