Helper method that creates a WeldObject that evaluates to itself.

    Parameters
    ----------
    data : numpy.ndarray or WeldObject or str
        Data to wrap around. If str, it is a placeholder or 'str' literal.

    Returns
    -------
    WeldObject
        WeldObject wrapped around data.

def create_placeholder_weld_object(data):
    """Helper method that creates a WeldObject that evaluates to itself.

    Parameters
    ----------
    data : numpy.ndarray or WeldObject or str
        Data to wrap around. If str, it is a placeholder or 'str' literal.

    Returns
    -------
    WeldObject
        WeldObject wrapped around data.

    """
    obj_id, weld_obj = create_weld_object(data)
    weld_obj.weld_code = '{}'.format(str(obj_id))

    return weld_obj