def split_group(name):
    """Split item name containing ``'/'`` into tuple of group/subname.

    Examples:
     - an input of ``'foo/bar'`` results in ``('foo', 'bar')``
     - an input of ``'foo/bar/baz'`` results in ``('foo/bar', 'baz')``
    """
    return tuple(reversed([x[::-1] for x in name[::-1].split("/", 1)]))