def recursive_unicode(obj: Any) -> Any:
    """Walks a simple data structure, converting byte strings to unicode.

    Supports lists, tuples, and dictionaries.
    """
    if isinstance(obj, dict):
        return dict(
            (recursive_unicode(k), recursive_unicode(v)) for (k, v) in obj.items()
        )
    elif isinstance(obj, list):
        return list(recursive_unicode(i) for i in obj)
    elif isinstance(obj, tuple):
        return tuple(recursive_unicode(i) for i in obj)
    elif isinstance(obj, bytes):
        return to_unicode(obj)
    else:
        return obj