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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 parseRest(self, response):
 """ Parse a REST response. If the response contains an error field, we will raise it as an exception. """

        body = json.loads(response)

        try:
            error = body['error']['description']
            code = body['error']['code']
        except Exception:
            return body['data']
        else:
            raise ClickatellError(error, code);