PyoKeysView

class PyoKeysView[K](KeysView[K], PyoMappingView[K], PyoSet[K]):
    """A view of the keys in a pyochain mapping.

    This class provides a view over the keys contained in a pyochain mapping, with
    additional methods from the `PyoMappingView`, `PyoSet`, and `PyoCollection` traits.

    Keys views support set-like operations since dictionary keys are unique.

    See Also:
        `PyoMapping.keys()`: Method that returns this view.
    """

    __slots__ = ()