Syntax error on line 107 views.py

We had a project on Python 3.9 and the minute I started using PDM I got this warning, for some reason PDM has revealed the warning:

select2/views.py:107: SyntaxWarning: "is" with a literal. Did you mean "=="?

You shouldn't be using `is` to check for equality, `is` is for checking identity only for things like if something `is None`

Did you want me to send a quick patch?