def is_type_dict(type_name):
    """Check if the type_name is a dict of pyleecan objects "{class_name}"

    Parameters
    ----------
    type_name : str
        name of the type to test

    Returns
    -------
    is_list : bool
        True if the type is a dict of pyleecan objects

    """
    return type_name[0] == "{" and type_name[-1] == "}"