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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def replace_termcodes(self, string, from_part=False, do_lt=True, special=True):
 r"""Replace any terminal code strings by byte sequences. The returned sequences are Nvim's internal representation of keys, for example: <esc> -> '\x1b' <cr> -> '\r' <c-l> -> '\x0c' <up> -> '\x80ku' The returned sequences can be used as input to `feedkeys`. """

        return self.request('nvim_replace_termcodes', string,
                            from_part, do_lt, special)