def _get_struct_2i():
    global _struct_2i
    if (_struct_2i is None):
        _struct_2i = struct.Struct('<2i')
    return _struct_2i
def _get_struct_2i():
    global _struct_2i
    if (_struct_2i is None):
        _struct_2i = struct.Struct('<2i')
    return _struct_2i