How to save the html file of the entity in csv when parsing using bs4?

Question

Python

I wrote a simple parser for an online store, but when saving the html structure to a csv file, incomprehensible characters are produced, I tried to encode in utf-8, but when I use this code to insert into another resource, they are not converted to html entities. How can this problem be solved.
An example of how it looks on the site
<li>Key Switch: Blue switch&nbsp;</li>
When saving to a file
<li>Key Switch: Blue switch </li>

Answer 1

write in binary mode