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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 raw(self, from_, to, body):
 """ Send a raw MIME message. """

        if isinstance(to, string_types):
            raise TypeError('"to" parameter must be enumerable')
        return self._session.post('{}/raw'.format(self._url), json={
            'from': from_,
            'to': to,
            'body': body,
        }).json()