PyCharm: Python version 2.7 does not support a 'F' prefix (even with Python 3.11)

Question

Although I use Python 3.11, still PyCharm shows these warning messages:

Python version 2.7 does not support a 'F' prefix

and:

Python version 2.7 does not support variable annotations

What I tried

I tried to reinstall it but still the same problem. I checked the interpreter. It is Python 3.11.

OS is Windows 11 and PyCharm in latest version. I am using downgraded versions of pip, but I don't think this is the reason.

Research

I searched online but can't find the solution online.

Question

How can I avoid those warnings?

Answer 1

Go to Settings > Editor > Inspections. There, in Python > Code compatibility inspections, you should see that Python 3.5's box is ticked in.(just tick the 3.6 as well)

This allows you to choose for which versions of Python your code will be inspected.

Note: this answer is originally by @Eskapps