colour.hints.Callable

colour.hints.Callable

Deprecated alias to collections.abc.Callable.

Callable[[int], str] signifies a function of (int) -> str. The subscription syntax must always be used with exactly two values: the argument list and the return type. The argument list must be a list of types, a ParamSpec or ellipsis. The return type must be a single type.

There is no syntax to indicate optional or keyword arguments; such function types are rarely used as callback types.

alias of Callable