Invalid syntax defining a dictionary?

[ThomasL]

If you look here and read the docs
@interact() is a decorator for functions

There is no function following your @interact() that can be decorated.
Remove that @ character.

The @interact is just the same line of code they show in a worked example, and it's worked for a previous exercise. I don't really know what the specific syntax means

Just copy pasting code and not knowing what you are doing is wasting time. Ours and yours.