Couldn't find a tree builder with the features you requested: html5lib. Do you need to install a parser library?

Question

I try to use soup4 with my python3.5 ,but evrey time i rule a code to extrac something from internet i get this error :

 - s4\__init__.py", line 198, in __init__
       % ",".join(features)) bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: html5lib. Do you need to    install a parser library?

There was a link with the same error in this site bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library? I tried all , still get the error

All the pip install requests pip install lxml pip install beautifull soup4

I download soup4 https://www.crummy.com/software/BeautifulSoup/bs4/download/4.6/ manual an install it setup.py install

I have all updated and working , but still i get the error plz help me

Answer 1

If you are using html5lib as an underlying parser:

soup = BeautifulSoup(html, "html5lib")
#                            ^HERE^

Then, you need to have html5lib module installed in your python environment:

pip install html5lib

Documentation reference: Installing a parser.