def _get_struct_3I():
    global _struct_3I
    if (_struct_3I is None):
        _struct_3I = struct.Struct('<3I')
    return _struct_3I
def _get_struct_3I():
    global _struct_3I
    if (_struct_3I is None):
        _struct_3I = struct.Struct('<3I')
    return _struct_3I