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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 create_controller(self):
 """Create a controller to handle the request :returns: Controller, this Controller instance should be able to handle the request """

        body = None
        req = self.request
        res = self.response
        rou = self.router
        con = None

        controller_info = {}
        try:
            controller_info = rou.find(req, res)

        except IOError as e:
            logger.warning(str(e), exc_info=True)
            raise CallError(
                408,
                "The client went away before the request body was retrieved."
            )

        except (ImportError, AttributeError, TypeError) as e:
            exc_info = sys.exc_info()
            logger.warning(str(e), exc_info=exc_info)
            raise CallError(
                404,
                "{} not found because of {} \"{}\" on {}:{}".format(
                    req.path,
                    exc_info[0].__name__,
                    str(e),
                    os.path.basename(exc_info[2].tb_frame.f_code.co_filename),
                    exc_info[2].tb_lineno
                )
            )

        else:
            con = controller_info['class_instance']

        return con