Method __setstate__

Lib/test/test_io/test_textio.py:1398–1400

(slf, state)

            def __getstate__(self):
                return self.tag, self.buffer.getvalue()
            def __setstate__(slf, state):
                tag, value = state
                slf.__init__(self.BytesIO(value), tag)

        raw = self.BytesIO(b'data')
        txt = MyTextIO(raw, 'ham')