Comment by quietbritishjim

I'll admit I do really like that.

I still think it proves my point: your original objection was about the syntax being C-like and, as I predicted, the differences in syntax in your idea (where the type goes, colon vs positional, etc.) are all trivialities that don't affect usability.

What's better about your idea is that it's actual Python code rather than being embedded in a string. Maybe that was your point originally and I misunderstood.

Looks like this package works like this: https://harrymander.xyz/dataclasses-struct/