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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:
 async def handle_user_exception(self, error: Exception) -> Response: """Handle an exception that has been raised. This should forward :class:`~quart.exception.HTTPException` to :meth:`handle_http_exception`, then attempt to handle the error. If it cannot it should reraise the error. """

        if isinstance(error, HTTPException) and not self.trap_http_exception(error):
            return await self.handle_http_exception(error)

        handler = self._find_exception_handler(error)
        if handler is None:
            raise error
        return await handler(error)