Post

Use the type `Literal` in your Python function signatures for arguments that represent options. This is better than using the general type that the configurations fall into. Stricter is better since it'll catch more bugs, earlier. It also helps document the valid values.

I'm a big fan of `Literal`. I prefer this version over the union version: Literal["fahrenheit", "celsius"] That means the same thing and saves a ton of typing.

I don't think I knew this :P

I used to know a Rodrigo who did know this. :-P *gestures at line 26* github.com/Textualize/t...