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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 log_exception( self, typ: "Optional[Type[BaseException]]", value: Optional[BaseException], tb: Optional[TracebackType], ) -> None: """Override to customize logging of uncaught exceptions. By default logs instances of `HTTPError` as warnings without stack traces (on the ``tornado.general`` logger), and all other exceptions as errors with stack traces (on the ``tornado.application`` logger). .. versionadded:: 3.1 """

        if isinstance(value, HTTPError):
            if value.log_message:
                format = "%d %s: " + value.log_message
                args = [value.status_code, self._request_summary()] + list(value.args)
                gen_log.warning(format, *args)
        else:
            app_log.error(  # type: ignore
                "Uncaught exception %s\n%r",
                self._request_summary(),
                self.request,
                exc_info=(typ, value, tb),
            )