There are some points in inspect module (I counted 48 since version 3.7) that could be using f-String formatting instead of format().

Changing these points will improve code readability, it will also decrease the complexity at these points and not to mention the fact that f-String formatting has better performance.

Obs.: Many other points could receive this improvement in other modules. This would provide the improvements I mentioned earlier, especially in older snippets of code.