Constants namespace with dataclass-like features

Ideas
8

Just want to link @invoke built-in Decorator for Immediately Invoked Function (IIF) Ability, which was basically the same thing.

@operator.call came up, so you can also do:

@operator.call
@dataclass(frozen=True, init=False)
class MY_PATHS:
    inputs: Path = Path("input/path")
    outputs: Path = Path("output/path")

Which does the same thing as Ned’s decorator, if you’re not into the whole brevity thing.

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