def describe(
        self,
        timeframe: TimeFrameLiteral,
        delta: Union[float, int] = 0,
        only_distance: bool = False,
    ) -> str:
        """Describes a delta within a timeframe in plain language.

        :param timeframe: a string representing a timeframe.
        :param delta: a quantity representing a delta in a timeframe.
        :param only_distance: return only distance eg: "11 seconds" without "in" or "ago" keywords
        """

        humanized = self._format_timeframe(timeframe, trunc(delta))
        if not only_distance:
            humanized = self._format_relative(humanized, timeframe, delta)

        return humanized
Describes a delta within a timeframe in plain language.

        :param timeframe: a string representing a timeframe.
        :param delta: a quantity representing a delta in a timeframe.
        :param only_distance: return only distance eg: "11 seconds" without "in" or "ago" keywords
        
arrow/locales.py