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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 _sub_ms_char(self, match):
 """Changes a MS smart quote character to an XML or HTML entity, or an ASCII character."""

        orig = match.group(1)
        if self.smart_quotes_to == 'ascii':
            sub = self.MS_CHARS_TO_ASCII.get(orig).encode()
        else:
            sub = self.MS_CHARS.get(orig)
            if type(sub) == tuple:
                if self.smart_quotes_to == 'xml':
                    sub = '&#x'.encode() + sub[1].encode() + ';'.encode()
                else:
                    sub = '&'.encode() + sub[0].encode() + ';'.encode()
            else:
                sub = sub.encode()
        return sub