[docs]defbind(function:Callable[[_FirstType],KindN[_BindableKind,_UpdatedType,_SecondType,_ThirdType],],)->Kinded[Callable[[KindN[_BindableKind,_FirstType,_SecondType,_ThirdType]],KindN[_BindableKind,_UpdatedType,_SecondType,_ThirdType],]]:""" Turns function's input parameter from a regular value to a container. In other words, it modifies the function signature from: ``a -> Container[b]`` to: ``Container[a] -> Container[b]`` Similar to :func:`returns.pointfree.lash`, but works for successful containers. This is how it should be used: .. code:: python >>> from returns.pointfree import bind >>> from returns.maybe import Maybe, Some, Nothing >>> def example(argument: int) -> Maybe[int]: ... return Some(argument + 1) >>> assert bind(example)(Some(1)) == Some(2) >>> assert bind(example)(Nothing) == Nothing Note, that this function works for all containers with ``.bind`` method. See :class:`returns.primitives.interfaces.bindable.BindableN` for more info. """@kindeddeffactory(container:KindN[_BindableKind,_FirstType,_SecondType,_ThirdType],)->KindN[_BindableKind,_UpdatedType,_SecondType,_ThirdType]:returncontainer.bind(function)returnfactory