How to get rid of BeautifulSoup user warning?

Question

After I installed BeautifulSoup, Whenever I run my Python in cmd, this warning comes out.

D:\Application\python\lib\site-packages\beautifulsoup4-4.4.1-py3.4.egg\bs4\__init__.py:166:
UserWarning: No parser was explicitly specified, so I'm using the best
available HTML parser for this system ("html.parser"). This usually isn't a
problem, but if you run this code on another system, or in a different
virtual environment, it may use a different parser and behave differently.

To get rid of this warning, change this:

 BeautifulSoup([your markup])

to this:

 BeautifulSoup([your markup], "html.parser")

I have no ideal why it comes out and how to solve it.

Answer 1

The solution to your problem is clearly stated in the error message. Code like the below does not specify an XML/HTML/etc. parser.

BeautifulSoup( ... )

In order to fix the error, you'll need to specify which parser you'd like to use, like so:

BeautifulSoup( ..., "html.parser" )

You can also install a 3rd party parser if you'd like.