[aprdm]

You can configure vscode to fail on typing problems and it will show errors in your editor

[peterashford]

So that's an IDE feature rather than a language level feature

[aprdm]

Nope, that's a language level feature. Your code will also fail at runtime. The IDE is just turning it on.

[meadsteve]

I don't think that's how it works. Unless you install a library like typeguard python doesn't do runtime type validation